I'm not going to completely rule out Liverpool, because they could be unexpected and very impressive in this game, even though it's difficult. Arsenal also shouldn't underestimate this match, even though Liverpool are in a bad state, they are still a big club that cannot be underestimated.
I watched their last two matches. Honestly, I don't see them as the team that could win against Arsenal, because they are playing without any incentive, as they look like they lost hope of taking one of the first four positions. Indeed, their mission looks difficult, as Manchester United, Newcastle, and even Tottenham look much better and more stable than Liverpool. However, if they wanted to stop Arsenal, they should play seriously and focus on the match, although Arsenal has bigger motivation to win, in my opinion.
Oh yes speaking of the meeting between Manchester City and Arsenal, of course it will be a very decisive match for these two clubs. Manchester City has a big chance to beat Arsenal, moreover they will play this match at the Etihad which is their headquarters. I think Arsenal will play very carefully, for them even a draw will mean a lot.
Sure, if both teams continued their winning series, the match would be decisive with an advantage for Arsenal in the case the match went to a draw, as they will be the visitors in this match. However, every match in the last ten rounds is important.