Does suddenly rising from prostration in prayer without prior intention, due to a sudden reaction, invalidate the prayer?

The scholars have stated that if a worshiper does not intend the prescribed transition with his action – such as rising from prostration to sitting – it is not sufficient for him. They have given the example of someone who stands up out of fright. While it is more complete to be mindful of the intention for every action, the religion of Allah is ease. The important thing is that the worshiper does not intend anything other than the prayer with his action. Therefore, your sudden rising from prostration without explicit intention is sufficient, especially for someone suffering from obsessive-compulsive disorder (waswasah), which we observe you are afflicted with. You must be extremely cautious of it.