Retiring at the end of the season, Cech hopes to hang up the gloves with the Europa League title.
The goalkeeper said: "My dream goes on - my dream is to retire with a trophy in my hands. Today we gave ourselves the chance for me to finish like this. There's a long way to go but with performances like that, we can compete."
Cech added: "We said that if we were meant to go out, we'd go out with a big performance. Sometimes you give a big performance, you do everything right, you are unlucky and you can go out. When you perform at the level we did today, you know that you have a chance to go through.
"As soon as the game started, you could see the way the team played and fought together. You know that you are giving yourselves a chance. We scored goals at important times and kept a clean sheet, which is what you need in a game like that."