In Jain Dharma, the Namokar Mantra is the most revered and powerful mantra for inner peace and protection from negative thoughts, including fear from bad dreams.

Namokar Mantra:

णमो अरिहंताणं णमो सिद्धाणं णमो आयरियाणं णमो उवज्झायाणं णमो लोए सव्वसाहूणं

Meaning: I bow to the Arihants, Siddhas, Acharyas, Upadhyayas, and all Sadhus in the world.

For bad dreams, you may do this before sleep:

• Chant the Namokar Mantra 9, 11, or 108 times.
• Keep a calm, pure mind.
• Remember the virtues of the Panch Parameshthi.
• Sleep with feelings of peace, forgiveness, and non-attachment.

A simple bedtime prayer in Jain spirit is:

“Micchami Dukkadam” Meaning: I seek forgiveness for any harm done by me.

This helps soften the mind and brings peace before sleep.

If you want, I can also give you a short Jain bedtime prayer for peaceful sleep.