Sunan An-Nasa'i

Abu 'Abdullah narrated that Ibn 'Abis Al-Juhani told him that:The Messenger of Allah [SAW] said to him: ""O Ibn 'Abis, shall I not tell you of the best thing with which those who seek refuge with Allah may do so?"" He said: ""Yes, O Messenger of Allah."" He said: ""Say: I seek refuge with (Allah) the Lord of the daybreak."", ""Say: I seek refuge with (Allah) the Lord of mankind."" - these two Surahs