I know you are looking for a response like you have gotten so far. How to physically respond to an attack. However, I want to commend you on what you actually did. You deescalated the situation so it didn't come to a fight. You swallowed your feelings of anger and told him everything was fine, even though it wasn't. You avoided eye contact that you felt would escalate the situation. Granted, it would be better to not look completely away, but the idea of not challenging him with a look straight in the eyes was good. And you stayed prepared, thinking about what you could do and how to position yourself the best way possible. In my mind, you did some great self defense there! If you want to work doors, knowing how to deescalate things to avoid as many fights as possible is going to be a good skill to have and it looks like you are off to a good start! You did some great self defense. Pat yourself on the back for that. One question, could you not have reported him to the bus driver as you got off the bus or called the police after you got off the bus to report this drug snorting confrontational dude?