Blocking

Blocking is a gameplay mechanic that allows players to block several forms of damage using a shield.

Shields are used for blocking incoming attacks. Using one causes the player to slow to a sneaking pace, and after 5 ticks (0.25 seconds)[1], blockable attacks and knockback coming from the front of the player are negated. Any effects from the attacker (e.g. wither or fire) do not afflict the defender. A successful block is indicated by a sound and the shield taking damage.

Blockable attacks include melee attacks, all non-magical projectiles, damage from Thorns, and all explosions. Shields have no effect on other types of damage, such as fall damage, drowning or splash potions. Shields partially block the laser attack from guardians and elder guardians by negating the direct damage.