Saul was below par against Aston Villa around a week ago in the Premier League at home, coming off after 45 minutes in the clash.
He has not played for the Blues since that game, but Saul revealed a positive chat with Tuchel after the contest.
"Tuchel's English is easy to understand. I don't speak England very well but I understand a bit," Saul told transfer specialist Fabrizio Romano in a lengthy interview on his YouTube channel.
"But he speaks good English, I had a meeting with him and we understood each other very well.
"I also thank him because in the first game with one day of training the fact that I started is a sign of his courage and confidence in me.
"He had a chat with me after the game to tell me to be calm and that I have to adapt, this is new. He told me that he put me in the starting XI because I had trained very well.
"But of course I only had one workout so it was difficult or me. The language, the stadium, everything new to me. A lot of information and it was what everyone saw in the game, I was lost and not knowing where I was.
"It was difficult, but the way Tuchel approached me after the game, it made me feel better and it was really appreciated.
"These things happen when you are not used to this league and even if you are a very good player it is difficult. Getting to know your teammates, the stadium, the fans. And I think in a couple of months I will be able to be at a very high level."
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