guidelines for prostration of forgetfulness

If the Worshipper is in Doubt regarding His Recitation of Al-Fatihah, should He make the Prostration of Forgetfulness, and what should He say therein?
If the Worshipper is in Doubt regarding His Recitation of Al-Fatihah, should He make the Prostration of Forgetfulness, and what should He say therein?

If the Worshipper is in Doubt regarding His Recitation of Al-Fatihah, should He make the Prostration of Forgetfulness, a...
If the Imam prays an extra Rak'ah and He does not perform the Prostration of Forgetfulness
If the Imam prays an extra Rak'ah and He does not perform the Prostration of Forgetfulness

If the Imam prays an extra Rak'ah and He does not perform the Prostration of Forgetfulness Question :A number of us per...