The Blues rotated their side for the group stage clash, and emerged with a 4-0 away win.
All four goals were scored by reserve striker Olivier Giroud, who has struggled for game time this season.
Afterward, Lampard spoke about the selection headache he must now deal with.
He told the club's website: "That's what you ask for I suppose when you make nine changes.
"I always say when I pick the team I try and pick the best team for the game and not to have favourites as such.
"You try and put the best team on paper.
"When players play as they did today they give you a great problem.
"It's not a problem, that's the wrong way to describe it, it's just having a top player playing with quality, playing with dedication."