During Hajj

Talbiyah 

لَبَّيْكَ اللَّهُمَّ لَبَّيْكَ، لَبَّيْكَ لَا شَرِيكَ لَكَ لَبَّيْكَ، انَّالْحَمْدَ، وَالنِّعْمَةَ، لَكَ وَالْمُلْكَ، لا شَرِيكَ لَكَ

Labbayk Allaahumma labbayk, labbayk laa shareeka laka labbayk, ‘innal-hamda, wanni’mata, laka walmulk, laa shareeka laka. (x 3)

Ever at Your service, O Allah, every at Your service. Ever at Your Service, You have no partner, ever at Your service. Verily all praise, blessings and dominions are Yours. You have no partner
[مسلم 2:841]

Upon reaching the Yemeni corner in Tawaf 

رَبَّنآ ءَاتِنَا فِى اْلدُّنْيَا حَسَنَةً وَ فى الاخِرَةِ حَسَنَةً وَ قِنَا عَذَابَ اْلنَّارَ

Rabbana aatina fid dunniyya hasanatan wa fil akhirati hasanatan wa qina ‘adhaban nar.

Our Lord! Grant us good in this world and good in the hereafter, and save us from the punishment of the Fire
[abu Dawud, ash-Shafi]

At Arafat 

لَا إِلَهَ إِلَّا اللَّهُ وَحْدَهُ لَا شَرِيكَ لَهُ لَهُ الْمُلْكُ وَلَهُ الْحَمْدُ وَهُوَ عَلَى كُلِّ شَيْءٍ قَدِيرٍ . اللَّهُمَّ اجْعَلْ فِي قَلْبِي نُورَاً وَفِي سَمْعِي نُورَاً وَفِي بَصَرِي نُورَاً اللَّهُمَّ اشْرَحْ لِي صَدْرِي وَيَسِّرْ لِي أَمْرِي وَأَعُوذُ بِكَ مِنْ وَسَاوِسِ الصُّدُورِ وَشَتَاتِ الْأَمْرِ وَفِتْنَةِ الْقَبْرِ اللَّهُمَّ إِنِّي أَعُوذُ بِكَ مِنْ شَرِّ مَا يَلِجُ فِي اللَّيْلِ وَشَرِّ مَا يَلِجُ فِي النَّهَارِ وَشَرِّ مَا تَهِبُّ بِهِ الرِّيَاحُ

There is none worthy of worship besides Allah, He is all by Himself, He has no partner, His is the Kingdom, for Him is all praise, He has power over all things. O Allah! Make Nur in my heart, in my ears Nur and in my eyes Nur. O Allah! Open my chest (bossom), make my tasks easy and I seek refuge in You from the whispers of the chest, from disorganisation in working and from the punishment of the grave. O Allah! I seek refuge in You from the evils that come with the wind.
[Hisnul Haseen]