Inter were 3-1 winners in Prague on Wednesday night.
"We've passed a big test and take these three points, on a pitch where many teams have struggled," Candreva told Inter TV. “We showed our character in the first half, then in the second half we deserved to win the game.
“We knew we had to suffer, and we did well to stay in the game after 1-1. It was an incident that could have hurt us, but we deserved the win in the end."
He added: “We are all happy. Now we must recharge. Tomorrow we will think about the League and then we can start to think about Barcelona."