Arsenal were the second to last side to be drawn from their respective seeded group and were placed in Group F alongside French side Marseille who were knocked out last season by Manchester United.
On top of Marseille, Arsenal will also need to face Greek side Olympiakos and a daunting trip to German Champions and the young Mario Gotze, Borussia Dortmund.
A: Bayern Munich, Villarreal, Manchester City, Napoli
B: Inter Milan, CSKA Moscow, Lille, Trabzonspor
C: Man. United, Benfica, Basel, Otelul
D: Real Madrid, Lyon, Ajax, Dinamo Zagreb
E: Chelsea, Valencia, Bayer Leverkusen, Genk
F: Arsenal, Marseille, Olympiacos, Borussia Dortmund
G: Porto, Skahktar, Zenit, APOEL
H: Barcelona, Milan, BATE, Plzen