The Czech Republic star says the Reds will always be special to him.
"It is always nice to play against a team who you have played for. I was happy I scored and I think we played well," the striker told Liverpoolfc.tv. "I wish Liverpool all the best for the season.
"This is my fourth season here at Galatasaray and I am really happy. We didn't play well last season, but now we've signed some good players and I hope it's going to be better than last year.
"I think it (the Champions League final) is the greatest game I have ever played in. Especially when we were 3-0 down at half-time and still managed to win. It was a special night and I think it was my best night in my football career.
"Liverpool will always stay in my heart. I hope they are going to play better than last year and they'll be closer to the top four and play for the title."