Darmian struck in the comfortable 3-0 victory.
"We knew how important this game was. We had to continue against an in-form team," the former Manchester United defender told Sky Sport Italia.
"We showed what we wanted from the first minute. We had a great game," he continued.
"I think we all feel important and we prove it when we go on the pitch. We know that everyone is needed if we want to go all the way. We must continue because we are on the right path."