Pierce thou my rivals, Darbha, pierce the men who fain would fight with me. Pierce all who wish me evil, pierce the men who hate me,. Amulet!
Split thou my rivals, Darbha, etc. (as in 1, with 'split' for 'pierce' throughout).
Slay thou my rivals. Darbha, slay the men who fain would fight with me. Slay all who wish me evil, slay the men who hate me, Amulet.