Barcelona tops after doubles from Messi and Suarez
Barcelona battered Roma 6-1 at the Nou Camp, with Lionel Messi and Luis Suarez both claiming a brace. Gerard Pique and Adriano also scored, with Neymar missing a penalty but impressing in link play.
Earlier, Bayer Leverkusen drew 1-1 at BATE Borisov with Mikhail Gordeichuk giving the home side the lead only for Admir Mehmedi to level for the German side just past the hour mark.
Zenit St Petersburg saw off Valencia 2-0 for their fifth straight European win to guarantee top spot in Group H.
Andre Villas-Boas' men eased home thanks to goals from Oleg Shatov and Artem Dzyuba.
Gent grabbed a last-16 lifeline with a 2-1 victory at Lyon that dumps the French side out of European competition.
Lyon pressed hard for the winner throughout the second half but Gent stole the points right at the end when Kalifa Coulibaly headed home a corner at the second attempt, some five minutes into stoppage time.
Dynamo Kiev had a surprise 2-0 win at Porto to give themselves a great chance of progressing. Victory moves Kiev to within two points of Porto and Chelsea, and a home win over Maccabi Tel-Aviv would be enough to go through.