The City defender, who played in all three of England’s World Cup qualifiers over the past fortnight, made an error that led to a Poland goal in a 2-1 World Cup qualifying win for Gareth Southgate’s men on Wednesday.
But Stones showed his strong character and mindset to keep focused and helped set up Harry Maguire’s late winner.
Asked at his pre-match press conference ahead of Saturday's trip to Leicester if Stones’ confidence would have taken a hit in seasons gone by, Pep said: “I didn't speak with John after the game. It’s a good question.
“But he made the winning goal… he was there. If you don't adjust aggressively like that you can't make the goal. His body language was good.”
The Catalan also added that he will have no qualms playing Stones against Leicester on Saturday, despite playing three games for his country in the space of a week when he was asked if he could be more susceptible to muscular injuries as a result.
“That was in the past,” the boss added.
“This season he was perfect. If I feel I want to use him, I will use him. I am sure he's ready for Saturday. I am so glad he played three games at a high level.”
Check out Pep's press conference in the video above!