Bismillah
Asalamu Alaykom,
A good dua to recite in the last sajda is the following:
اللهم اني اسألك الراحة عند الموت والمغفرة بعد الموت والعفو عند الحساب يا كريم يا وهاب
O Allah verily I ask for ease during death, and forgiveness after death and pardon during the judgement, O giving one, O the giving one.
May Allah grant you success