a situation in which you are protected against from legal action:

Being granted immunity from prosecution because he confessed the names of the other spies

noun: immunity; plural noun: immunities

1. the state or quality of being resistant to a particular infectious disease or pathogen."immunity to typhoid seems to have increased spontaneously"
2. protection or exemption from something, especially an obligation or penalty."the rebels were given immunity fromprosecution"
   • LAWofficially granted exemption from legal proceedings or liability.
   • lack of susceptibility, especially to something unwelcome or harmful."products must have an adequate level of immunity to interference