Final answer:
Marcus Aurelius is portrayed by Richard Harris in the Russell Crowe film Gladiator, which is a historical drama set in ancient Rome.
Step-by-step explanation:
Richard Harris portrayed Marcus Aurelius in the film Gladiator, which stars Russell Crowe. Gladiator is an epic historical drama directed by Ridley Scott, released in the year 2000. The movie is set in ancient Rome and follows the story of Maximus Decimus Meridius, played by Russell Crowe, who is a betrayed Roman general seeking revenge against the corrupt emperor who murdered his family and sent him into slavery. Marcus Aurelius, the philosophical emperor and practitioner of Stoicism, is depicted at the beginning of the film, sharing wise counsel with Maximus before his untimely death.