وَسَوَآءٌ عَلَيْهِمْ ءَأَنذَرْتَهُمْ أَمْ لَمْ تُنذِرْهُمْ لَا يُؤْمِنُونَ
Wa sawaaa'un 'alaihim 'a-anzartahum am lam tunzirhum laa yu'minoon
Saheeh International
And it is all the same for them whether you warn them or do not warn them - they will not believe.