Invocations for sitting between two prostrations

رَبِّ اغْفِرْ لِي رَبِّ اغْفِرْ لِي"
48. Rabbighfir lee, Rabbighfir lee.

Lord, forgive me. My Lord, forgive me.

Reference: Abu Dawud 1/231. See also Al-Albani, Sahihibn Mdjah 1/148.

"اللَّهُمَّ اغْفِرْ لِي، وَارْحَمْنِي، وَاهْدِنِي، وَاجْبُرْنِي، وَعَافِنِي، وَارْزُقْنِي، وَارْفَعْنِي".

49. Allaahum-maghfir lee, warhamnee, wahdinee, wajburnee, wa 'aafinee, warzuqnee, warfa'nee.

O Allah forgive me, have mercy on me, guide me, support me, protect me, provide for me and elevate me.

Reference: Abu Dawud, Ibn Majah, At-Tirmithi. See also Al-Albani, Sahih At-Tirmithi 1/90 and Sahih Ibn Majah 1/148.