When leaving the home
When leaving the house recite:
بِسْمِ اللَّهِ تَوَكَّلْتُ
عَلَى اللَّهِ وَلَا حَوْلَ وَلَا قُوَّةَ إِلَّا بِاللَّهِ
"I depart with Allah's name, relying on Him. It is Allah who
saves us from sins with His guidance (the ability to do so)." (Tirmidhi)
It is stated in the hadith that if a person recites the above
dua and departs then there is an (unseen) procalamation that his need will be
fullfilled and that he will be protected from any harm or injury. On hearing
this dua, the Satan goes away from the place and refrains from troubling the
reciting person.
(Tirmidhi)
Also look towards the sky and recite:
اللَّهُمَّ إِنِّي أَعُوذُ بِكَ أَنْ
أَضِلَّ أَوْ أُضَّلَّ أَوْ أَظْلِمَ أَوْ أُظْلَمَ أَوْ أَجْهَلَ أَوْ يُجْهَلَ
عَلَىَّ
"O Allah, I seek refuge in You from misleading or being misled
or oppressing or being oppressed or from being ignorant or bearing the result
of ignorance".
(Mishkat)
Source/By :
Fortification of the Muslims through remembrance and supplication from the Quran and the Sunnah