Feeling ill? Recite Surah Al-Falaq and Surah An-Naas! Aisha (may Allah be pleased with her) said:
Aisha (may Allah be pleased with her) said: In His last illness, the Prophet (peace be upon him) used to blow breath (into his cupped hands) and recite Al-Mu'awwidhatayn (Surah Al-Falaq and An-Naas) and then wipe over his body. But when his illness aggravated, I used to recite them over him and pass his own hand over his body for its blessing. [Al-Bukhaari, Muslim].