I think this quarter final phase will be a very interesting one. Watching Real Madrid play yesterday they actually don’t look unbeatable so I think Arsenal have a chance against Real Madrid.
Every team usually has a chance against Real Madrid in the CL, until the match starts and then they show the world why they are called the kings of Europe. I don't know how Real Madrid do it, but they are almost unbeatable in the CL, they will eliminate Arsenal, i am almost certain of that, and if and when Madrid gets to the semi-final, you know they are very close to winning it again, and they might just do it.
This will also depend on Arsenal and the injuries they have to cope with at the moment because Real Madrid isn't suffering from many injuries while Arsenal as far as I know is. And if there is one moment in a season when you need al the best players to be ready, it is certainly a Champions League game against Real Madrid.
If Real Madrid had to compensate for Vinicius Junior and Mbappe at the same time, I think everyone agrees that this would be impossible for them although they are the biggest club in the world.
Arsenal is missing Jesus, Havertz, Saka (who will soon return), Sterling. This is quite a big deal as some of them are their most important offensive players, like Havertz and Saka.