Whenever the Prophet ﷺ said, "Allah hears whoever praises Him," he would then say, "O Allah, our Lord, to You belongs all praise."The Prophet ﷺ would say "Allahu Akbar" when bowing and when raising his head, and when he stood up from the two prostrations, he would say, "Allahu Akbar."
حدثنا آدم قال حدثنا ابن أبي ذئب عن سعيد المقبري
كان النبي ﷺ إذا قال سمع الله لمن حمده قال اللهم ربنا ولك الحمد وكان النبي ﷺ إذا ركع وإذا رفع رأسه يكبر وإذا قام من السجدتين قال الله أكبر