I had a chat recently with my manager and he clearly has some pain-points, i.e. he is frustrated with something about me. During the recent meeting, he told me that I delayed one of the NN mio. projects while I was not a person-in-charge for the whole project and I was not a manager there. He doesn't have professional arguments but just blames. I have a frustration because of this and frustration cannot live inside me for a long time. I want to have a discussion with him and send a clear message that he should provide professional arguments and discuss them. I want to start a discussion by email and explain my position. In case if it is not going to work, I can take this email to his manager.
Currently, I need to help to organize a discussion with him. How would you write an email and discuss with him the pain he has? How would you approach a similar situation?