"Whoever says this when he rises in the morning will be protected from jinns until he retires in the evening, and whoever says it when retiring in the evening will be protected from them until he rises in the morning."

"Whoever says this when he rises in the morning will be protected from jinns until he retires in the evening, and whoever says it when retiring in the evening will be protected from them until he rises in the morning."
(reported by Al-Hakim 1 / 562, Al-Albani graded it as authentic in Sahihut-Targhib wat-Tarhib 1/273, and traces it to An-Nasa'i and At-Tabarani. He says that At-Tabarani's chain of transmission is reliable (Jayyid).)

Transliteration: Allahu la ilaha illa Huwa, Al-Haiyul-Qaiyum La ta'khudhuhu sinatun wa la nawm, lahu man fis-samawati wa ma fil-'ard Man dhal-ladhi yashfa'u 'indahu illa bi-idhnihi Ya'lamu ma baina aidihim wa ma khalfahum, wa la yuhituna bi shai'im-min 'ilmihi illa bima sha'a Wasi'a kursiyuhus-samawati wal ard, wa la ya'uduhu hifdhuhuma Wa Huwal 'Aliyul-Adheem

Translation: Allah - there is no deity except Him, the Ever-Living, the Sustainer of [all] existence. Neither drowsiness overtakes Him nor sleep. To Him belongs whatever is in the heavens and whatever is on the earth. Who is it that can intercede with Him except by His permission? He knows what is [presently] before them and what will be after them, and they encompass not a thing of His knowledge except for what He wills. His Kursi extends over the heavens and the earth, and their preservation tires Him not. And He is the Most High, the Most Great.
[Surah Al baqarah 2:255]