"It was the best to score a goal like that, even if I am calm and just keep going down the same road," Pizarro recalled on the Roma Channel.
"I am doing fine and it was an important goal to put us back in the game after we had been caught cold by a side in excellent form.
"I am happy that the group showed it can deal with these situations. We have a 51 per cent chance of getting through, but we always knew that Real Madrid would be tough.
"Their possession play impressed me and they are clearly used to playing in these kind of games. They are more of a physical squad than a technical one and they are made for this kind of event.
"However, we showed what we can do on Tuesday and we can get past them."