#bbcfootball or text 81111 (UK only - standard message rates apply)
Text or tweet in any thoughts you have on tonight's games - we'd love to hear from you!
'I've already got in there' - Idah
Portugal v Republic of Ireland (19:45 BST)
Speaking of Ronaldo, Republic striker Adam Idah says he has already used his "contacts" to pitch for the 36-year-old's prized shirt after tonight's game.
"I've already got in there," said the Norwich forward.
"His goalscoring record is just outrageous. Overall, he's one of the best, for me."
What would Roy Keane think of Idah longing for Ronaldo's shirt, I wonder...
Here's a little breakdown of Ronaldo's international goal haul.
31 - European Championship qualifiers
31 - World Cup qualifiers
19 - International friendlies
14 - European Championship
7 - World Cups
5 - Uefa Nations League
2 - Confederations Cup
Almost half of Ronaldo's goals have come in the final 30 minutes of games.
He has netted 31 times in the final 15 minutes and 22 times between the 61st and 75th minute.
Ronaldo has scored 17 times between minutes 16-30 and 16 times between 31-45, with 11 in the opening 15 minutes of the first half and 12 in the opening 15 minutes of the second half.
Some 89 of his goals have been inside the box with 20 from outside. He has scored 14 penalties and nine free-kicks.
Lithuania and Sweden (seven each) are the sides against whom he has scored the most.
Ronaldo's big night
Portugal v Republic of Ireland (19:45 BST)
The Irish will face Manchester United's latest signing tonight - you may have heard of him?
Yes, Cristiano Ronaldo is back at Old Trafford, but right now he's very much focused on claiming yet another record for Portugal.
If he scores, he will become the all-time leading international goalscorer, surpassing Iran striker Ali Daei's mark of 109 (which he tied when he scored the second of his two goals in a 2-2 draw with France at Euro 2020).
Also, with Ronaldo in the line-up for his 180th Portugal cap, he ties Spain defender Sergio Ramos as the most-capped European men's international player.
Ramos isn't in the latest Spain squad so Ronaldo can move past his former Real Madrid team-mate if he plays against Qatar on Saturday or Azerbaijan on Tuesday.
BBC SportCopyright: BBC Sport
Team news
Portugal v Republic of Ireland (19:45 BST)
The teams are in!
St Mirren midfielder Jamie McGrath is handed his first Republic start while Aaron Connolly returns to the side to partner Adam Idah in attack with Troy Parrott having to settle for a place on the bench.
Gavin Bazunu is retained in the Irish goal, behind a back three of Shane Duffy, John Egan and Dara O'Shea.
Southampton striker Shane Long misses out after testing positive for Covid-19.
BBC SportCopyright: BBC Sport
The big news for Portugal is that Cristiano Ronaldo starts, earning his 180th cap in the process to tie Sergio Ramos as the most-capped European men's international.
It's a talent-rich Portuguese team that also features Liverpool forward Diogo Jota, Ronaldo's new Manchester United club team-mate Bruno Fernandes and Manchester City trio Joao Cancelo, Ruben Dias and Bernardo Silva.
BBC SportCopyright: BBC Sport
Republic striker Long tests positive for Covid-19
Portugal v Republic of Ireland (19:45 BST)
Southampton striker Shane Long is not part of the Republic of Ireland squad after testing positive for Covid-19.
It has been five months since that game against Luxembourg.
Fortunately for Stephen Kenny, the Republic of Ireland remembered how to win during their June friendlies, beating Andorra 4-1.
Not-so-fortunately, tonight's opponents promise to cause the Irish a few more problems in a game Kenny's side simply must win after failing to pick up a point in their first two games.
Welcome to our live text commentary of the Boys in Green's World Cup qualifier against Portugal in Faro. It's good to have you with us.
Live Reporting
Matt Gault and Emlyn Begley
All times stated are UK
LINE-UPS
France v Bosnia-Herzegovina (19:45 BST)
A star-studded France team tonight...
France: Lloris, Kounde, Varane, Kimpembe, Digne, Veretout, Pogba, Lemar, Benzema, Griezmann, Mbappe.
Subs: Kante, Martial, Tchouameni, Coman, Maignan, Zouma, Mandanda, Dubois, Hernandez, Diaby, Lenglet.
Bosnia-Herzegovina: Sehic, Hadzikadunic, Ahmedhodzic, Sanicanin, Susic, Hadziahmetovic, Pjanic, Cimirot, Kolasinac, Demirovic, Dzeko.
Subs: Krunic, Prevljak, Piric, Cipetic, Gojak, Nalic, Kovacevic, Vasilj, Loncar, Jovicic, Stevanovic, Civic.
Get Involved
#bbcfootball or text 81111 (UK only - standard message rates apply)
Text or tweet in any thoughts you have on tonight's games - we'd love to hear from you!
'I've already got in there' - Idah
Portugal v Republic of Ireland (19:45 BST)
Speaking of Ronaldo, Republic striker Adam Idah says he has already used his "contacts" to pitch for the 36-year-old's prized shirt after tonight's game.
"I've already got in there," said the Norwich forward.
"His goalscoring record is just outrageous. Overall, he's one of the best, for me."
What would Roy Keane think of Idah longing for Ronaldo's shirt, I wonder...
Read more from Idah here.
How Ronaldo's goals have come
Portugal v Republic of Ireland (19:45 BST)
Here's a little breakdown of Ronaldo's international goal haul.
31 - European Championship qualifiers
31 - World Cup qualifiers
19 - International friendlies
14 - European Championship
7 - World Cups
5 - Uefa Nations League
2 - Confederations Cup
Almost half of Ronaldo's goals have come in the final 30 minutes of games.
He has netted 31 times in the final 15 minutes and 22 times between the 61st and 75th minute.
Ronaldo has scored 17 times between minutes 16-30 and 16 times between 31-45, with 11 in the opening 15 minutes of the first half and 12 in the opening 15 minutes of the second half.
Some 89 of his goals have been inside the box with 20 from outside. He has scored 14 penalties and nine free-kicks.
Lithuania and Sweden (seven each) are the sides against whom he has scored the most.
Ronaldo's big night
Portugal v Republic of Ireland (19:45 BST)
The Irish will face Manchester United's latest signing tonight - you may have heard of him?
Yes, Cristiano Ronaldo is back at Old Trafford, but right now he's very much focused on claiming yet another record for Portugal.
If he scores, he will become the all-time leading international goalscorer, surpassing Iran striker Ali Daei's mark of 109 (which he tied when he scored the second of his two goals in a 2-2 draw with France at Euro 2020).
Also, with Ronaldo in the line-up for his 180th Portugal cap, he ties Spain defender Sergio Ramos as the most-capped European men's international player.
Ramos isn't in the latest Spain squad so Ronaldo can move past his former Real Madrid team-mate if he plays against Qatar on Saturday or Azerbaijan on Tuesday.
Team news
Portugal v Republic of Ireland (19:45 BST)
The teams are in!
St Mirren midfielder Jamie McGrath is handed his first Republic start while Aaron Connolly returns to the side to partner Adam Idah in attack with Troy Parrott having to settle for a place on the bench.
Gavin Bazunu is retained in the Irish goal, behind a back three of Shane Duffy, John Egan and Dara O'Shea.
Southampton striker Shane Long misses out after testing positive for Covid-19.
The big news for Portugal is that Cristiano Ronaldo starts, earning his 180th cap in the process to tie Sergio Ramos as the most-capped European men's international.
It's a talent-rich Portuguese team that also features Liverpool forward Diogo Jota, Ronaldo's new Manchester United club team-mate Bruno Fernandes and Manchester City trio Joao Cancelo, Ruben Dias and Bernardo Silva.
Republic striker Long tests positive for Covid-19
Portugal v Republic of Ireland (19:45 BST)
Southampton striker Shane Long is not part of the Republic of Ireland squad after testing positive for Covid-19.
We'll have full team news in a few minutes...
Welcome!
Portugal v Republic of Ireland (19:45 BST)
It has been five months since that game against Luxembourg.
Fortunately for Stephen Kenny, the Republic of Ireland remembered how to win during their June friendlies, beating Andorra 4-1.
Not-so-fortunately, tonight's opponents promise to cause the Irish a few more problems in a game Kenny's side simply must win after failing to pick up a point in their first two games.
Welcome to our live text commentary of the Boys in Green's World Cup qualifier against Portugal in Faro. It's good to have you with us.