Nazar

The Nazar is an accessory that has a 1% drop by a Cursed Hammer, Cursed Skull, or an Enchanted Sword. This item grants invulnerability to the equipped player to any Curse debuffs.

Trivia
The name might have come from the Indian saying "नसर न लगे" (transliterated: "Nasara na lagē") which is said to keep that person safe from harms way.