2005 Arizona Revised Statutes - Revised Statutes §13-405  Justification; use of deadly physical force

A person is justified in threatening or using deadly physical force against another:

1. If such person would be justified in threatening or using physical force against the other under section 13-404, and

2. When and to the degree a reasonable person would believe that deadly physical force is immediately necessary to protect himself against the other's use or attempted use of unlawful deadly physical force.