Allah helped the Prophet to victory

سَنُلْقِى فِى قُلُوبِ ٱلَّذِينَ كَفَرُوا۟ ٱلرُّعْبَ بِمَآ أَشْرَكُوا۟ بِٱللَّهِ مَا لَمْ يُنَزِّلْ بِهِۦ سُلْطَٰنًۭا ۖ وَمَأْوَىٰهُمُ ٱلنَّارُ ۚ وَبِئْسَ مَثْوَى ٱلظَّٰلِمِينَ

Soon shall We cast terror into the hearts of the Unbelievers, for that they joined companions with Allah, for which He had sent no authority: their abode will be the Fire: And evil is the home of the wrong-doers!

إِذْ يُوحِى رَبُّكَ إِلَى ٱلْمَلَٰٓئِكَةِ أَنِّى مَعَكُمْ فَثَبِّتُوا۟ ٱلَّذِينَ ءَامَنُوا۟ ۚ سَأُلْقِى فِى قُلُوبِ ٱلَّذِينَ كَفَرُوا۟ ٱلرُّعْبَ فَٱضْرِبُوا۟ فَوْقَ ٱلْأَعْنَاقِ وَٱضْرِبُوا۟ مِنْهُمْ كُلَّ بَنَانٍۢ

Remember thy Lord inspired the angels (with the message): "I am with you: give firmness to the Believers: I will instil terror into the hearts of the Unbelievers: smite ye above their necks and smite all their finger-tips off them."

وَأَنزَلَ ٱلَّذِينَ ظَٰهَرُوهُم مِّنْ أَهْلِ ٱلْكِتَٰبِ مِن صَيَاصِيهِمْ وَقَذَفَ فِى قُلُوبِهِمُ ٱلرُّعْبَ فَرِيقًۭا تَقْتُلُونَ وَتَأْسِرُونَ فَرِيقًۭا

And those of the People of the Book who aided them - Allah did take them down from their strongholds and cast terror into their hearts. (So that) some ye slew, and some ye made prisoners.

هُوَ ٱلَّذِىٓ أَخْرَجَ ٱلَّذِينَ كَفَرُوا۟ مِنْ أَهْلِ ٱلْكِتَٰبِ مِن دِيَٰرِهِمْ لِأَوَّلِ ٱلْحَشْرِ ۚ مَا ظَنَنتُمْ أَن يَخْرُجُوا۟ ۖ وَظَنُّوٓا۟ أَنَّهُم مَّانِعَتُهُمْ حُصُونُهُم مِّنَ ٱللَّهِ فَأَتَىٰهُمُ ٱللَّهُ مِنْ حَيْثُ لَمْ يَحْتَسِبُوا۟ ۖ وَقَذَفَ فِى قُلُوبِهِمُ ٱلرُّعْبَ ۚ يُخْرِبُونَ بُيُوتَهُم بِأَيْدِيهِمْ وَأَيْدِى ٱلْمُؤْمِنِينَ فَٱعْتَبِرُوا۟ يَٰٓأُو۟لِى ٱلْأَبْصَٰرِ

It is He Who got out the Unbelievers among the People of the Book from their homes at the first gathering (of the forces). Little did ye think that they would get out: And they thought that their fortresses would defend them from Allah! But the (Wrath of) Allah came to them from quarters from which they little expected (it), and cast terror into their hearts, so that they destroyed their dwellings by their own hands and the hands of the Believers, take warning, then, O ye with eyes (to see)!