Which Tibetan mantra can help me remove negative energies from myself and my surroundings?

Name: Veer Malhotra

Date of Birth: 30 May 1994

Time of Birth: 1:10 PM

Place of Birth: Jaipur, India

I want to keep my personal space clear of negativity. Which mantra should I focus on to protect and purify my aura and my surroundings effectively?