What is the ruling on one who says: "Pray for the Prophet" or "May Allah guide you" in discussions, especially when angry, if he does not intend it as a supplication but rather uses it to facilitate fraud and deception?

Commanding prayers upon the Prophet (peace be upon him), reminding people of dhikr (remembrance of Allah) when heedless, and supplicating for people's guidance are all praiseworthy in Islamic law. These actions fall under cooperation in righteousness and piety, and loving good for Muslims. However, if one does so with the intention of fraud or mockery, they have committed an impermissible act and must repent. To calm anger, one should be reminded to seek refuge in Allah from Satan, for Al-Bukhari and Muslim narrated that the Prophet (peace be upon him) said regarding an angry person: "Indeed, I know a word which, if he were to say it, his anger would vanish: 'I seek refuge in Allah from Satan, the accursed.'"