Inter have now gone six consecutive San Siro games without any of their strikers on target.
"A striker lives for a goal and not getting it does slowly become a weight, but these are moments that every forward goes through. We've got to let them stay calm and clear-headed. They fought hard and the ball didn't want to go in," said Ranieri.
"I told Pazzini some people lost the Champions League with a slip like that, so it's nothing to be too desperate about. I'm sure he won't sleep for two or three nights, but he will get over it."