Narrated Anas ibn Malik:

The Prophet ﷺ said: When a man goes out of his house and says: "In the name of Allah, I trust in Allah; there is no might and no power but in Allah," the following will be said to him at that time: "You are guided, defended and protected." The devils will go far from him and another devil will say: How can you deal with a man who has been guided, defended and protected?

حَدَّثَنَا إِبْرَاهِيمُ بْنُ الْحَسَنِ الْخَثْعَمِيُّ، حَدَّثَنَا حَجَّاجُ بْنُ مُحَمَّدٍ، عَنِ ابْنِ جُرَيْجٍ، عَنْ إِسْحَاقَ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي طَلْحَةَ، عَنْ أَنَسِ بْنِ مَالِكٍ، أَنَّ النَّبِيَّ ﷺ قَالَ " إِذَا خَرَجَ الرَّجُلُ مِنْ بَيْتِهِ فَقَالَ بِسْمِ اللَّهِ تَوَكَّلْتُ عَلَى اللَّهِ لاَ حَوْلَ وَلاَ قُوَّةَ إِلاَّ بِاللَّهِ " . قَالَ " يُقَالُ حِينَئِذٍ هُدِيتَ وَكُفِيتَ وَوُقِيتَ فَتَتَنَحَّى لَهُ الشَّيَاطِينُ فَيَقُولُ لَهُ شَيْطَانٌ آخَرُ كَيْفَ لَكَ بِرَجُلٍ قَدْ هُدِيَ وَكُفِيَ وَوُقِيَ " .