act out (someone's) role

Translations
сыграть (чью-то) роль
In the play, he had to act out the role of the villain.
В пьесе ему пришлось сыграть роль злодея.
Definitions
To perform or assume the actions, behavior, or responsibilities typically associated with another person's position, character, or part, often in a play, simulation, or real-life situation.