Eintracht Frankfurt 2-0 Benfica (4-4)
Eintracht Frankfurt overturned a 4-2 first-leg deficit to defeat Benfica on the away goals rule and set up a Europa League semi-final with Chelsea.
Goals by Filip Kostic and Sebastian Rode sent the German club, who trailed 4-1 at one stage in the first leg, through to a first European semi-final in 39 years.
Valencia meet Arsenal after an aggregate 5-1 win over Villarreal.
The semi-final first legs take place on 2 May, with the return a week later.