Barzagli feels they now have one hand on the Scudetto.
He said: “It's another step forward and a game that we knew would be important. We're not mathematically there yet, but 70-80 per cent there.
“Yet again, we had to suffer and fight back, but we got there in the end.
"We are accustomed to these long seasons and when we get to the end, there is always some fatigue, but we've never had as big a dip as this year.
“The only positive is that we know how to suffer. We made life more complicated for ourselves and then we managed to turn it around."