The Turkish side came from behind at the Veltins Arena to win 3-2 on the night to secure a place in the quarter-finals of the tournament.
The midfielder told reporters after the match: "We definitely deserved it. We made a lot of mistakes in the second half and dropped back and they made it difficult.
"We wanted to go for the third, but we didn't do it and they kept pushing. I think Schalke played well but with all the team spirit [we had], it's a deserved victory."
The draw for the last eight takes place on Friday.