[Machine] About the Prophet (PBUH), whenever he fell sick, he used to recite the "Mu'awwidhat" (i.e. Surah Al-Falaq and Surah An-Nas) and blow onto himself.
عَنِ النَّبِيِّ ﷺ أَنَّهُ كَانَ إِذَا مَرِضَ يَقْرَأُ عَلَى نَفْسِهِ بِالْمُعَوِّذَاتِ وَيَنْفُثُ