Aziraphale and Crowley's Con

Crowley and Aziraphale manage to scam their respective HQs by switching faces. Both were sentenced to death by their respective 'poisons': Hellfire for angels, and holy water for demons. Even the representatives of either side agree that cooperation is the key to removing the traitors. However, once they endure their respective executions, Crowley and Aziraphale deliver their counter-offer: Leave them alone on Earth, or face the wrath of their Earthly powers.

Example of:
Did You Just Scam Cthulhu?