From the Sunan of what should be said during the prayer is:
1. Reciting the Opening Supplication after the first Takbeer:
Alternatively, you may say:
2. Seeking Refuge in Allah before reciting the Ayaat:
“I seek refuge in Allah from Shaytan – the accursed.”
3. Then reciting Al-Basmala:
“In the Name of Allah – the Most Gracious, the Most Merciful.”
4. Saying Aameen after reciting Al-Fatihah.
5. Reciting a Surah after Al-Fatihah.
The person praying alone should recite a Surah or part of one, after Al-Fatihah in the first two Rak’ah of all prayers.
For the one who is praying behind the Imam the congregation, he should read a Surah after Al-Fatihah in the first two Rak’ah of the silent prayers.
As for the first two Rak’ah of the loud prayers, he does not read but instead listens to the Imam’s recitation.
6. Supplicating upon rising from Rukoo’:
“Our Lord, to You be all praise.”
And then say,
7. Repeating the Tasbeeh more than once:
The Tasbeeh while bowing:
The Tasbeeh while prostrating:
8. Repeating this Supplication more than once while sitting between the Two Prostrations:
“My Lord, forgive me.”
9. Supplicating after the Final Tashahud:
“O Allah, verily I seek refuge with You from the punishment of Hell and the punishment of the grave and from the trials of life and death and from the evil trial of the Dajjal.”
10. Lengthening the Supplication when prostrating.
It is preferred for the person not to shorten the supplication after the initial Tasbeeh in prostration, but on the contrary, to increase the supplication as he wills. This is taken from the following hadeeth:
“The closest the servant is to his Lord is when he is prostrating – so increase the supplication in it.”
Points to Note:
The Sunan of speech are performed in every Rak’ah except the opening supplication and the supplication after the Tashshahud.
There are other supplications. Whoever desires to know then may refer to Hisn Al-Muslim by Shaykh Sa’eed Al-Qahtaanee.
So, the total number of the Sunan mentioned above, in the obligatory prayers, amount to ten. As for the optional prayers performed in the day and night in which these two Sunan are repeated, their total amounts to twenty-four Sunan. This may be increased by performing Qiyaam Al-Layl [the late night prayer], Ad-Duha [the prayer after sunrise] and Tahiyat Al-Masjid. By performing more often the Sunan that occur once in the Salah, the person’s reward will be increased and his hold on the Sunnah strengthened.
[Book: More than 1000 Sunan Every Day and Night (Adhkar Min Alf Sunnah Fee Al-Yawm Wa Al-Laylah, Dar-us-Salaam Publications)]