To protect from Shirk, Prophet (ﷺ) said:
اَللَّهُمَّ إِنَّا نَعُوذُ بِكَ مِنْ أَنْ نُشْرِكَ بِكَ شَيْئًا نَعْلَمُهُ وَنَسْتَغْفِرُكَ لِمَا لَا نَعْلَمُهُ
Pronunciation
Allaahumma inna nau'dhu bika min an nushrika bika shay'an na'lamuhu wa nastaghfiruka lima laa na'lamuh
Meaning
O Allah, We seek refuge in You from ascribing any partner to you knowingly. We also seek your forgiveness from unknowingly [ascribing partners to you].
Source: Hasan Ligairihi (Albani). Sahih at-Targib: 36
Duas from IslamicAPI's Masnun Dua dataset (based on the Quran, hadith, Hisnul Muslim and Rahe Belayat). See the dataset