Guardiola says it was important they accepted defeat in the right way.
He said, "It's just life, it's football. Important is how you behave, football, life isn't easy you have to fight and compete it's how we react. We have to accept these sort of situations, but looking behind won't help us move forwards.
"These kind of players have an opportunity to show they can do that. They will get back what they deserve. One day maybe we will be in the same position and maybe we will be more fortunate or precise or whatever to go through.
"We did everything in both games. I'm so proud of the players."