The mantra is actually a Stambhan mantra to stop the enemy in his tracks. This mantra has to be recited 108 moments taking the name on the enemy, that is harming you. This it's been mentioned inside the Tantra will damage his intellect. ॥ॐ ऐं सूदर्शनाय (अमुक) वश्यं हुं https://www.youtube.com/watch?v=eiG0mLI21eY