Empire (2005)

Caesar watches as the slave and gladiator, Tyrannus, slaughters his competitors, unaware that Cassius and Brutus -- Caesar's "friends" -- plan to assassinate him shortly, an event foretold by the psychic vestal virgin, Camane. After the assassination, Caesar's murderers seek to take over the empire, but standing in their way is a will naming Caesar's nephew, Octavius, as heir. Keeping a promise made to Caesar, Tyrannus spirits Octavius away from those who now want him dead.