Surah Al Falaq translates as The Daybreak is the 113th chapter (sūrah) of the Qur'an. It is a brief five verse surah, asking God for protection from the evil:

Say, "I seek refuge in the Lord of daybreak
From the evil of that which He created
And from the evil of darkness when it settles
And from the evil of the blowers in knots
And from the evil of an envier when he envies

The word "al-Falaq" in the first verse, a generic term referring to the process of 'splitting', has been restricted in most translations to one particular type of splitting, namely 'daybreak' or 'dawn'

Benefits:
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."(Al-Falaq), "Say: I seek refuge with (Allah) the Lord of mankind."(Al-Nas) - these two Surahs.

Aisha (May Allah be pleased with her) said : Every night when he prophet (May peace be upon him) went to his bed, he joined his hands and breathed into them, reciting into them:”say: he is Allah, One”(Al-Ikhlas) and say ; I seek refuge in the Lord of the dawn(Al-Falaq) and Say: I seek refuge in the Lord of men(Al-Nas). Then he would wipe as much of his body as he could with his hands, beginning with his head, his face and the front of his body, doing that three times

Imam Muhammad al-Baqir (a.s.) said that in the prayer of Shafa’a (in Salaatul-layl) one should recite Surah al-Falaq in the first rak’aat and an-Naas in the second.