Thibaut Courtois had a clean sheet against Liverpool, setting up a semi-final showdown with his former club Chelsea.
Liverpool manager Jurgen Klopp reflected on Wednesday's Champions League elimination at the hands of Real Madrid.
Manchester City are through to the Champions League semi-finals for the first time in five years, owing much to Phil Foden's goals.
Liverpool's Champions League run came to an end at Anfield, the English club unable to score in the second leg of the quarter-final.
England team-mate Phil Foden had the last say, but Jude Bellingham made his mark on the Champions League on Wednesday.
Marcel Sabitzer was at the double as a pair of Hugo Lloris errors condemned Tottenham to defeat at RB Leipzig and a Champions League exit.