Lacazette scores from close range to put Gunners in front
Willian scores Chelsea opener with free-kick before Ampadu heads into own net from a corner
Nego volleys in to give Hungarian side the lead before Giroud fires in set-piece
There's no top-flight action on Friday night but still a very good game to follow here on BBC Sport, as West Brom travel to Chris Wilder's Sheffield United.
Then on Saturday there are seven Premier League games beginning with Manchester City v Everton at 12:30 GMT.
Join us for the lot.
See you there.
Arsenal 1-0 Qarabag
Arsenal
Image source, ReutersArsenal striker Bukayo Saka told BT Sport: "It was a dream come true. Ever since I joined the club at the age of eight, I have always dreamed of playing at the Emirates. I didn't start too fast but I grew into the game and then I started to get past my man better. I should have scored at the end, but I don't know what happened.
"The manager told me I was playing yesterday in training and I couldn't believe it. My family were buzzing and they couldn't stop smiling but they managed to put me to bed early. It feels good because we are on a long unbeaten run and we want to end it, the coach wants us to keep winning.
"I just have to keep playing well at youth level, and any time I get the chance at the first team, I have to impress and show him what I can do."
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
#bbcfootball
Onoru: Rosenborg save the day for Celtic
Kyle: No justice in football. How on earth has this Celtic side qualified?
Arsenal 1-0 Qarabag
Arsenal
Image source, ReutersSpeaking to BT Sport, Arsenal defender Laurent Koscielny said: "It was very important for me today. It was my last day of rehab, so now I start a new chapter in my career. For me it is important to enjoy the game with my teammates, and it didn't matter about the result, it was just about being on the pitch with my friends.
"It was a difficult game because Qarabag played well. It was very important to keep our unbeaten run going for the confidence and now we start a big challenge ahead of Christmas. Today we played with many young players and they showed lots of determination and focus on their jobs.
"It is difficult being out injured. It was the first big injury of my career and I had to take a long time out, but you learn a lot about yourself and I am very happy. I am focused mentally, and I can smile and enjoy the rest of the season."
The draw for the last 32 in the Europa League will be on 17 December in Nyon, Switzerland at 12:00 GMT.
The 12 group winners, plus the four best third-placed teams from the Champions League, are the seeded teams.
The runners-up and remaining Champions League sides are the unseeded teams.
Teams from the same group or same country cannot be drawn together.
The first legs will be played on 14 February before the second leg a week later.
Arsenal 1-0 Qarabag
Allow Twitter content?
This article contains content provided by Twitter. We ask for your permission before anything is loaded, as they may be using cookies and other technologies. You may want to read Twitter’s cookie policy, external and privacy policy, external before accepting. To view this content choose ‘accept and continue’.
FT: Celtic 1-2 Salzburg
Willie Miller
Former Scotland defender on BBC Radio Scotland
Quote MessageWe assumed that Salzburg had nothing to play for because they had won the group and we assumed that Rosenborg had nothing to play for and they had no chance - how wrong you can be on both counts. Salzburg played extremely well and Rosenborg got that unlikely equaliser. Celtic are through deservedly - but you have to say there was a little bit of good fortune there.
Chelsea and Arsenal are seeded for the draw for the last 32, which takes place on Monday 17 December.
#bbcfootball or 81111 on text (UK only)
Thierry Jawnry: Bukayo Saka needs a Bundesliga loan when he turns 18 next season
Olympiakos 3-1 AC Milan
Another shock, of sorts. The seven-time Champions League winners don't make it out of Group F.
Celtic 1-2 RB Salzburg
Depeche Mode is fired up, a huge cheer greets the announcement of the full-time whistle in Germany. What a way to qualify!
RB Leipzig 1-1 Rosenborg
In lucky, lucky fashion! Rosenborg's late leveller sends them through...
Arsenal 1-0 Qarabag
Olivier Ntcham
A penalty in stoppage-time! Olivier Ntcham hits the post but bundles in th rebound.
Image source, ReutersAlright Paul...
#bbcfootball
Paul: Celtic will just inevitably go out next round instead then. They still aren't good enough.
Into added time. Can AC Milan save themselves? Can Celtic continue to be saved by Rosenborg?!
Arsenal 1-0 Qarabag
What a chance!
Arsenal should score a second, it's put on a plate for young Bukayo Saka, he drills it but it's kept out by the face of Vagner in the Qarabag goal.
Incredible. He's knocked the keeper out as well...
Image source, ReutersRB Leipzig 1-1 Rosenborg
Celtic's blushes appear to have been saved as Tore Reginiussen has equalised for Rosenborg against Leipzig.
Image source, Getty Images