Asmaa’ bint Omays, radi Allahu ‘anha, said: Allah’s Messenger, sal Allahu alayhi wa sallam, told me, “Shall I not teach you words to say whenever you are aflicted with something? Say: ‘Allah Allahu Rabbi (Allah, Allah is my Lord), Laa Oshreeka Bihi Shayah (I do not associate anything as partner with Him)”. (Abi Dawud)