I think Liverpool wins this game 4-2, the only way Roma can qualify is by winning by a 3 goal difference (of course if it goes 6-3 Liverpool would qualify), but to score three goals you have to go all out in attack, and unlike Barcelona who can't score a goal if there aren't a lot of side way passes, Liverpool can take advantage of free space in the back zone in two strokes.
I do admire the way Roma plays and they still could make it, just that I see the odds are against them.