﴿اللهُ لَا إله إلَّا هُوَ الحَيُّ القَيُّومُ لَا...﴾
Whoever says this (i.e. āyah al-Kursī) 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.
Reference: Whoever says this (i.e. āyah al-Kursī) 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. Al-Hākim (1/562) and Al-Albānī authenticated it in _Ṣaḥīḥ al-Targhīb wa al-Tarhīb_ (#655, 1/273) and he attributed it to al-Nasāʾī in _ʿAmal al-Yawm wa al-Laylah_ (#960) and al-Ṭabarānī in _al-Kabīr_ (#541) and said that the latter's chain is good.