Berserk Episode 10 -

Griffith survives the attempt because his Beherit, hanging around his neck, blocked the poisoned needle hidden in the cup or acted as a shield (depending on the interpretation of the "luck" it provides).

Griffith’s dream is finally within reach, but it requires him to move into a world of "poison and shadows." Berserk Episode 10

This episode highlights his "Silver Tongue" and his ability to navigate high society just as easily as a battlefield. It also shows his ruthlessness; he is not shaken by the assassination attempt, but rather uses it as a strategic opening. Griffith survives the attempt because his Beherit, hanging