Al-An'am - 6:23

ثُمَّ لَمْ تَكُن فِتْنَتُهُمْ إِلاَّ أَن قَالُواْ وَاللّهِ رَبِّنَا مَا كُنَّا مُشْرِكِينَ
[6:23]
Then their excuse would be nothing but that they would say: By Allah, our Lord, we were not polytheists.
There will then be (left) no subterfuge for them but to say: "By Allah our Lord, we were not those who joined gods with Allah."
Then will they have no contention save that they will say: By Allah, our Lord, we never were idolaters.