It is narrated from Ali (may Allah be pleased with him) that when the Prophet (ﷺ) would raise his head from bowing in an obligatory prayer, he would recite: "O Allah! O our Lord! All praise is for You, as much as would fill the heavens and the earth and as much as would fill whatever else You will."
Hadith Referenceمسند الإمام الشافعي / كتاب الصلاة / 229
Hadith Takhrijأخرجہ مسلم، الصلوة، باب صلاة النبي ﷺ ودعائه باللیل : (771)