EntityLivingAttacked

The EntityLivingAttacked Event is fired whenever an entity is being attacked.
It can be canceled to stop the entity from taking damage.

Event Class

You will need to cast the event in the function header as this class:
crafttweaker.event.EntityLivingAttackedEvent
You can, of course, also import the class before and use that name then.

Event interface extensions

PlayerDeathDrops Events implement the following interfaces and are able to call all of their methods/getters/setters as well:

ZenGetters

ZenGetter Type
damageSource IDamageSource
amount float