You being killed can represent: A feeling or fear of ill will, victimization, manipulation, or someone or something taking power away from you (physically, emotionally, or mentally).
Something of yours (such as a project or process) coming to an end, perhaps earlier than you expected.
An ending within yourself, mentally or emotionally (such as a certain event changing the way you see the world, “killing” your old outlook on the world).
See also: Dying; Attacked, Being; Killing; Execution; Death of You; Violence; Life Force; Hunting; Shot, Being; Weapon... killed, being dream meaning