Word by Word Analysis

فَمَا كَانَ دَعْوَىٰهُمْ إِذْ جَآءَهُم بَأْسُنَآ إِلَّآ أَن قَالُوٓا۟ إِنَّا كُنَّا ظَـٰلِمِينَ 5

And their declaration when Our punishment came to them was only that they said, "Indeed, we were wrongdoers!"