Proper Laboratory Attire

Protection from die rolls means the equipped creature can’t be dealt damage by, equipped or enchanted by, blocked by, or targeted by anything that allows or requires someone to roll a die. This includes any kind of dice, not just six-sided dice. This also includes anything that allows you to reroll a die.

The equipped creature won’t have protection from anything that cares about the results of dice without allowing or requiring someone to roll a die, such as Snickering Squirrel.