Sayyiduna Uqbah bin Amir (may Allah be pleased with him) said that the Messenger of Allah (peace and blessings be upon him) said to me: "Recite the Mu'awwidhatayn (the two surahs of seeking refuge), for you will not recite anything else like them."
Hadith Referenceالمعجم الكبير للطبراني / باب العين / 14920