Liverpool will face Chelsea in the Champions League semi-final tomorrow night.
Alonso said: “There is nothing about the atmosphere at Stamford Bridge that intimidates us.
“But when they come to Anfield, I’m sure our supporters are going to be by our side because they know the meaning of success in Europe.
“The extraordinary atmosphere we are going to taste again at Anfield for the second leg is a real bonus to us.
“It was a big help two seasons ago when we eliminated Chelsea in the Champions League semi-finals.
“Our support was important again last season when we beat them in the FA Cup semis. So we are confident.”