It is an affirmative defense to a civil action for damages for personal injury or death brought against a person performing duties under Article 2A.002(f) , Code of Criminal Procedure, the person's employer, or the owner of a commercial nuclear power plant where the person was working, that at the time the cause of action arose the person was justified in using force under Chapter 9, Penal Code.
Tex. Civ. Prac. and Rem. Code § 100.001