Hisnul Muslim 203

For fear of shirk

اللَّهُمَّ إِنِّي أَعُوذُبِكَ أَنْ أُشْرِكَ بِكَ وَأَنا أَعْلَمْ، وَأَسْتَغْفِرُكَ لِمَا لَا أَعْلَمُ

Allaahumma 'innee 'a'oothu bika 'an 'ushrika bika wa 'anaa 'a'lamu, wa 'astaghfiruka limaa laa 'a'lamu.

O Allah, I seek refuge in You lest I associate anything with You knowingly, and I seek Your forgiveness for what I know not.