Chelsea's Serb defender was suspended for Munich after picking up a yellow card at the Nou Camp.
And, after his team-mates won on penalties, he said: "Some matches are harder to watch than play - the Champions League final is top of that list.
"I was so nervous I could hardly look. If you are playing, you can do your job. Sitting in the stadium, you are powerless.
"But at the end I was as happy as a child."