Some people says that magic exists and someone did magic on the prophet as well. Wasn’t Allah there to protect his Prophet. What does Quran say about it that ?

۞ يَٰٓأَيُّهَا ٱلرَّسُولُ بَلِّغۡ مَآ أُنزِلَ إِلَيۡكَ مِن رَّبِّكَۖ وَإِن لَّمۡ تَفۡعَلۡ فَمَا بَلَّغۡتَ رِسَالَتَهُۥۚ وَٱللَّهُ يَعۡصِمُكَ مِنَ ٱلنَّاسِۗ إِنَّ ٱللَّهَ لَا يَهۡدِي ٱلۡقَوۡمَ ٱلۡكَٰفِرِينَ ٦٧

O Messenger! Deliver what has been revealed to you from your Lord, for if you fail to do that, you have not fulfilled the task of His messengership. Allah will certainly protect you from the evil of men. Surely Allah will not guide the unbelievers (to succeed against you).

Aey Paigambar! Jo kuch tumhare Rubb ki taraf se tumpar nazil kiya gaya hai woh logon tak pahuncha do , agar tumne aisa na kiya to uski paigambari ka haqq ada na kiya. Allah tumko logon ke sharr se bachaane wala hai. Yaqeen rakkho ke woh kafiron ko (tumhare muqable mein) kamiyabi ki raah hargiz na dikhayega

فَلَا تَحۡسَبَنَّ ٱللَّهَ مُخۡلِفَ وَعۡدِهِۦ رُسُلَهُۥٓۚ إِنَّ ٱللَّهَ عَزِيزٞ ذُو ٱنتِقَامٖ ٤٧

So, do not think, (O Prophet), that Allah will go back upon His promise to His Messengers. Surely Allah is Mighty, Lord of retribution.

Pas (aey Nabi), tum hargiz yeh gumaan na karo ke Allah kabhi apne Rasoolon se kiye huey wadon ke khilaf karega. Allah zabardast hai aur inteqam lene wala hai