Curse of Undeath

Could some explain curse of undeath. My friend thinks it only works is he starts the boarding action against my empire of dust ship. Im pretty sure it whenever he attempts to roll crew strength dice against. weather I initiated the action or not.

It applies to any boarding action against EoD ship crew. It does not depend on who started the boarding action nor on whether the boarding action was initiated this activation or just continues. At least that’s how I understand the wording of the rule.