Periptiea - The Periptiea, or reversal of fortune was when Brutus started out with a great intention but ended up with huge guilt which lead him to suicide.
Anagnorisis - The anagnorisis, or recognition was when Brutus realized what he had done and committed suicide.
Catharsis - Catharsis, purgation of pity and fear was when Cassius kills himself because of fear.