Minecraft wiki entry for Fire_Protection, associated text: In Java Edition, Fire Protection reduces burn time when set on fire by (15 × level)%. If multiple pieces have the enchantment, only the highest level's burn time reduction is used. Theoretically at level 8, the player cannot be lit on fire through Fire Aspect enchantments. The only way to burn is standing in lava or fire. The initiated fire-ticks (lava: 300, fire: 150) are canceled, and only the remaining time in the fire source is added to the fire-tick timer.