So I saw just a portion of a movie, where a man sits at a table in prison, in the cafeteria. He had a cellmate (a black dude with long hair). While in the cafeteria, a russian guy approaches an older man next to him, and presents himself (the russian guy – some strange name like ‘Simion’, or something) and asks for money for protection. Old man says he doesn’t need any protection from him, so the russian guy smashes his head against the table, and says something like ‘Looks like you need protection’. Then proceeds to approach the other man (The main actor of the movie), he leans on his table, and barely gets to introduce himself again (‘Hi, my name is Simion’ – or something like that), when the main actor swipes one of the dudes hand, making him fall and hit the table, then throws some punches at him.
The main actor might be Jason Statham, but I’m not sure.
Locked Down (2010)?