Quran 16:84 from Surah An-Nahl on Divine Marvels.
وَيَوۡمَ نَبۡعَثُ مِن كُلِّ أُمَّةٖ شَهِيدٗا ثُمَّ لَا يُؤۡذَنُ لِلَّذِينَ كَفَرُواْ وَلَا هُمۡ يُسۡتَعۡتَبُونَ
English translation: And the Day We will resurrect from every nation a witness then not will be permitted to those who disbelieved and not they will be asked to make amends
Transliteration: wayawma nab'athu min kulli ummatin shahidan thumma la yu'dhanu lilladhina kafaru wala hum yus'ta'tabuna