Man City qualify for knockout stages
City through as runners-up to Bayern
Zabaleta converts Nasri assist for second
Long-range Nasri strike fires City in front
More discontent from the home stands as Roma needlessly give away possession in the City half, and then concede a free-kick close the halfway line.
City edging closer to their second straight appearance in the last 16 of the Champions League. Ten minutes to go in Rome. And 10 minutes to go in Munich, where a CSKA Moscow goal would change nothing.
City striker Edin Dzeko has put in a decent shift on his first start for over a month. The Bosnian claps the travelling supporters before having his weary legs replaced by the fresh Stevan Jovetic.
Groans from the demanding Roma fans as Pablo Zabaleta - for once tonight - nips in ahead of his Roma opponent to win back possession. Those moans will be music to City's collective ears.
Image source, AFPBarcelona and Paris St-Germain are of course battling it out for top spot in that group, with the Catalan club leading 2-1 to nick it.
Meanwhile, Ajax are now 3-0 ahead against Apoel in Group F's other match in Amsterdam thanks to a second goal from Schone and their third of the night from Davy Klassen.
Mikel San Jose has given Athletic Bilbao a flying start to the second half of their Group H match against BATE Borisov.
It won't have any bearing on qualification from that group though with Porto and Shakhtar Donetsk already through.
Shakhtar themselves are a goal ahead at Porto through Taras Stepanenko.
In Chelsea's group, Schalke have taken the lead against Maribor courtesy of Max Meyer, a scoreline which would see them qualify as runners-up as things stand.
Kevin Kilbane
BBC Radio 5 live
"That was almost Gordon Banks like from Joe Hart to touch Manolas's header onto the post. How he has saved that I don't know. The pressure is building."
Nervy times there for City, but they manage to regroup quickly after that double scare.
The English team are well in command remember - Roma must score twice in the next 15 minutes (and added time) to go through. City's last-16 spot to lose.
And then City defender Martin Demichelis comes to his team's rescue by blocking a shot on his own goal-line.
Joe Hart, for the first time tonight, went walkabout as he failed to deal with a low cross. But can thank his Argentine colleague for stopping Roma substitute Mattia Destro making an instant impact.
City rocking.
Roma hit the post! Kostas Manolas heads goalwards but Joe Hart makes an outstanding save at full stretch to push the effort on to the post and away to safety. Phew.
Not a dream night for the Champions League's oldest goalscorer - although Francesco Totti has enjoyed plenty of those over the years. He trots off in place of Italy forward Mattia Destro.
Image source, AFPAnd that is Adem Ljajic's last contribution as the Roma midfielder is replaced by Juan Manuel Iturbe, a tricky Argentine winger who the Serie A side splashed big cash on last summer.
Equally importantly for City fans is a change of their own seconds later. A huge cheer from the away fans greets the return of David Silva who has missed eight matches with a knee problem. He replaces Spanish compatriot Jesus Navas.
BBC Radio 5 live
The phone lines are open for the 5 live Football Social, which follows this match.
Manchester City fans, give your reaction to tonight's crucial match on 0500 909 693 text on 05058 or @bbc5live.
Another Roma chance, another let-off for City. Adem Ljajic twists and turns past Pablo Zabaleta, but fires wildly over the City woodwork.
Think Roma are done and dusted? Think again. Roma midfielder Radja Nainggolan gives City a reminder that this tie is far from over, blasting a 25-yard drive which stings the palms of away keeper Joe Hart.
Wasiyullah Budye:, external That's a stunning strike by Samir Nasri. Top goal!
Nathan Bowman:, external What a strike from Nasri! The Champions League never disappoints!
Kevin Kilbane
BBC Radio 5 live
"They can afford to let Roma build the pressure now. City have been a threat on the break all game though and it has been a brilliant performance from Nasri."
You can listen to live commentary of Manchester City's match at Roma on BBC Radio 5 live here or by clicking on the Live Coverage tab at the top of this page.
City's travelling band of fans po-go, and Poznan, in delight as the delighted City players celebrate in front of them.
They know that Roma must score twice now to stand any chance of qualifying. And that should leave a few gaps at the back for the visitors to exploit.
Kevin Kilbane
BBC Radio 5 live
"What a goal. Brilliant from Samir Nasri. James Milner freed up the space with his movement and what a strike. The sheer power beat the goalkeeper."
Wow! Samir Nasri thumps City ahead with a thunderbolt of a shot from 25 yards, which pounds the left-hand post and then bulges the Roma net.
City lead 1-0. Bayern lead 1-0 against CSKA Moscow. And that means City will join the German champions in the last 16 - as things stand.
Cat. Among. Pigeons.
Image source, AFPKevin Kilbane
BBC Radio 5 live
"Excellent goalkeeping. So many times you see goalkeepers parry the ball back into the danger area. Great hands from Joe Hart pushing it away from danger."
City boss Manuel Pellegrini gasps with relief on the touchline. As do 1,500 City fans in the Stadio Olimpico. Miralem Pjanic pounces on a loose ball and fancies a dig from distance. The Bosnian does exactly that, forcing Joe Hart into a splendid save low down to his right.