Thanks for joining us on another night of comebacks.
For a while we thought it would be CSKA Moscow against Arsenal, but the Gunners escaped in the end.
It was Red Bull Salzburg's night.
The four Europa League semi-finalists are Arsenal, Atletico Madrid, Salzburg and Marseille.
Find out who the Gunners get in tomorrow's draw at 11:00 BST. That will be followed by the Champions League draw. Follow both of them on the BBC Sport website.