Try to bargain

H...hold on, (orcs are dumb right?) i have a lot of hidden gold, i can give it to you if you let me go.

Orc1 (the one who grabbed you) pushes you into the ground with one hand and rip your clothes with the other with one single movement.

Orc3- Its a lie, you all say that, we dont buy it anymore!

Seems like there is no way out of this, you have 2 or 3 offensive spells, but they could defeat 1 or 2 orcs at most, right now you can surrender or you can resist.