Duas to be recited in Salaah
Duas to be recited in Qaumah (the standing posture after Ruku before going into Sajda)
رَبَّنَا وَلَكَ الْحَمْدُ حَمْدًا كَثِيْرًا طَيّبًا مُّبَارَكًا فِيْهِ
(Our Sustainer, for You is all praise in abundance, excellent and blessed) Bukhari V1 P110
Duas to be recited in Jalsa (the sitting posture between the two Sajdas)
اَللّهُمّ اغْفِرْ لِيْ وَارْحَمْنِيْ وَعَافِنِيْ وَاهْدِنِيْ وَارْزُقْنِيَ
( O Allah forgive me, have mercy on me, grant me peace, guide me and grant me sustenance) Abu Dawood V1 P123
These Duas should be recited in Fardh, Sunnah and Nafl Salaah