2:6
اِنَّ الَّذٖینَ كَفَرُوا سَوَٓاءٌ عَلَیْهِمْ ءَاَنْذَرْتَهُمْ اَمْ لَمْ تُنْذِرْهُمْ لَا یُؤْمِنُونَ
Inna allatheena kafaroo sawaon AAalayhim aanthartahum am lam tunthirhum la yuminoona
Translations
Indeed, those who disbelieve - it is all the same for them whether you warn them or do not warn them - they will not believe
Saheeh International
As for the Disbelievers, Whether thou warn them or thou warn them not it is all one for them; they believe not
Marmaduke Pickthall