Surah Al-A'raf — Ayah 5 (7:5)
فَمَا كَانَ دَعۡوَىٰهُمۡ إِذۡ جَآءَهُم بَأۡسُنَآ إِلَّآ أَن قَالُوٓاْ إِنَّا كُنَّا ظَٰلِمِينَ ٥
English translation (Saheeh International)
And their declaration when Our punishment came to them was only that they said, "Indeed, we were wrongdoers!"
Brief commentary
All they could do when the punishment came down on them was to admit that they had done wrong through their disbelief in Allah.