1- To dream of being killed represents the dreamer coming under an influence usually external which is making him, or an aspect of his personality ineffective in everyday life. Killing someone in a dream is attempting to be rid of the influence thev have over the dreamer.
2- Killing is an extreme answer to a problem. It is such a final act that in dreams it can often represent the dreamer’s perception of the need for violence, particularly against himself. Perhaps the only way a solution to a problem can be reached is by ‘killing off’ part of himself. There is no denying in this ease the potential for violence, although ultimately the impulse may not be correct.
3- A spiritual slaying and therefore sacrifice is represented here.
The dreamer will need to be aware that what he considers worthy may need further nurturing, lest it be relinquished.... Ten Thousand Dream Dictionary