Sunan Ibn Majah, Book 31, Hadith 3676 (In-Book) ⓘ
It was narrated from Khawlah bint Hakim that the Prophet said: “If anyone of you, when he stops to camp (while on a journey), says A’udhu bi kalimatil-lahit-tammati min sharri ma khalaq (I seek refuge in the Perfect Words of Allah from the evil of that which He has created), then nothing will harm him in that place until he moves on.”
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا عَفَّانُ، حَدَّثَنَا وُهَيْبٌ، حَدَّثَنَا مُحَمَّدُ بْنُ عَجْلاَنَ، عَنْ يَعْقُوبَ بْنِ عَبْدِ اللَّهِ بْنِ الأَشَجِّ، عَنْ سَعِيدِ بْنِ الْمُسَيَّبِ، عَنْ سَعْدِ بْنِ مَالِكٍ، عَنْ خَوْلَةَ بِنْتِ حَكِيمٍ، أَنَّ النَّبِيَّ ـ صلى الله عليه وسلم ـ قَالَ " لَوْ أَنَّ أَحَدَكُمْ إِذَا نَزَلَ مَنْزِلاً قَالَ أَعُوذُ بِكَلِمَاتِ اللَّهِ التَّامَّةِ مِنْ شَرِّ مَا خَلَقَ - لَمْ يَضُرَّهُ فِي ذَلِكَ الْمَنْزِلِ شَىْءٌ حَتَّى يَرْتَحِلَ مِنْهُ " .
also referenced under: Hadith 3547 (Reference) & Volume 4, Book 31, Hadith 3547 (DarusSalam)