The Reds cruised to victory in the first leg of the last-16 tie at Anfield thanks to goals from Daniel Sturridge and Roberto Firmino either side of the break.
Regarding the performances of his players, Klopp felt that all who stepped onto the Anfield turf made a strong contribution to the convincing victory.
The German said: "It's not the first time that Clyney (Nathaniel Clyne) has played well and been very important for us. But tonight, if we start giving grades, if you want this, then there are a lot of good grades.
"Simon Mignolet, we can start with him, he was really good. Everything, absolutely no mistake in this game and it's difficult to stay concentrated when you always know each cross or corner or each free-kick is really dangerous because [Marouane] Fellaini is on the pitch.
"Emre (Can) and Hendo (Jordan Henderson) did a brilliant job, Phil (Coutinho), Adam (Lallana), great, Roberto (Firmino), Daniel (Sturridge), as long as he was on the pitch, that was really good.
"The substitutes, Joe Allen when he came in [was] so important, so good.
"Divock Origi, [gave us] again the control of the game because they couldn't play like they wanted because they knew each bad pass was a counter-attack because Divock and his speed is dangerous too.
"It was good, so I don't have to compare the players – tonight I'm really pleased with all of them."