Here are some examples:
* The Devil's Advocate (1997): Pacino plays John Milton, a charismatic and powerful lawyer who offers a young lawyer (Keanu Reeves) a job at his prestigious firm. Though not explicitly the Devil, Milton possesses many characteristics of a demonic figure, including a love for temptation, manipulation, and ultimately, destruction.
* Scarface (1983): Pacino's portrayal of Tony Montana, a ruthless Cuban drug lord, embodies a dark, ambitious, and ultimately self-destructive nature that could be seen as devilish.
While he has never played the Devil himself, Pacino has certainly inhabited characters that explore the dark side of human nature, blurring the lines between good and evil.