Totti came off the bench to score the winner from the spot.
“A game is won by 11 players. I try to give my contribution when I come on, but the whole turn overturned the game," the captain told Sky Sport Italia.
“It was the first time I was a little scared that I'd miss. It was too important to crown this match with an assist and a winning goal. Besides, I was under the Curva Sud, so I couldn't miss there."
Totti will turn 40 on September 27, so is he glad he didn't retire this summer?
“The pitch is what decides. If I am in this condition and have the right mentality, why stop?"