Partizan is eliminated by

AEL Limassol

With same result as in the first match (1-0). The way we played we deserved to lose with even a bigger margin. They were much better and they outplayed us on our own field, even though they played with 9 players through the whole match (almost). It is a shame how our players were inferior on the field, but more than that - it is a shame how they didn't show any wish to fight. They showed no respect for the jersyies they were wearing, so elimination was deserved.
Crvena Zvezda eliminated

Omonia on penalties (6:5 for Zvezda in the penalty kick-out, and no goals during regular time, just like in the first match), and Rapid Vienna eliminated Vojvodina with 2:0 in the second match.
So, there will be two Serbian teams in the Europa League play-offs, and these are their rivals:

Tromsø IL -

Partizan

Crvena Zvezda -

Girondins De Bordeaux
As for our rival, I heard of Tromsø only once, and I know that they are one of the best teams in Norway. I know that they also play tough and that they rarely lose on home field. They managed to eliminate Olimpija and Metalurg which probes that they are a great team. Since the first match is played in Norway, we musn't lose, and we need to look for at 1 goal, as a goal on away field doubles our chances of passing. As we are in a crisis currently, I think Tromsø has higher chances to pass, but based on the general streingh of the two teams, I think the chances are 50:50.
I will watch some of their matches in the Norwegian championship to see how they play and to get a closer look on their qualities.
Oh yes, and Crvena Zvezda has no chances to eliminate Bordeaux. I think that a petard is certain on away field, but they should at least play for honor.....