The Swede scored from the spot in this first-leg Champions League semifinal.
Gyokeres said afterwards: "I think in the first half we controlled the game quite well. We had a few good opportunities and managed to score. In the second half they started much better and managed to get a goal and then towards the end we had a few okay chances. Overall it was a tough game, it's a tough place to come but it's only half time.
"I didn't see either of the penalties so it's difficult to say but that's football. I don't know why they turned the second penalty down (on Ebere Eze), it looks like contact but it's the referee's decision.
"It was not easy once they scored, they have the crowd here. We tried to play and get that momentum back that we had in the first half, towards the end we did but it was a tough second half.
"We know when we play at home with our fans it's going to be different. We just have to do our job and be at our best."