اِنَّ الَّذِيْنَ كَفَرُوْا سَوَاۗءٌ عَلَيْہِمْ ءَاَنْذَرْتَھُمْ اَمْ لَمْ تُنْذِرْھُمْ لَا يُؤْمِنُوْنَ۶
Inna allatheena kafaroo sawaon AAalayhim aanthartahum am lam tunthirhum la yuminoona
As for those who deny, it is all the same if you warn them or not, they will not believe.