Berserk (1997) - Episode 9 - "Assassination"

Episode 9 Synopsis (Assassination):

Griffith and the Princess are growing closer during the hunt. Though suddenly, after assisting the Princess with her rouge horse - Griffith is shot in the chest with a poisoned arrow. However, the arrow miraculously struck his Behelit necklace, thus remaining unharmed.
Griffith innately suspects that Julius is behind the plot, and asks Guts to assassinate him.