Here is a simple Vandana Sutra often chanted before starting Samayik. It is the Namokar Mantra, a core Jain prayer of reverence to the spiritual triad and enlightened beings.

Original text (Prakrit): Namo Arihantanam Namo Siddhanam Namo Ayariyanam Namo Uvajjayanam Namo Loe Savva-sahunam

Meaning (arth) in simple terms:

• Namo Arihantanam: I bow to the Arihants (enlightened beings who have conquered inner enemies).
• Namo Siddhanam: I bow to the Siddhas (liberated souls who have attained perfect knowledge and bliss).
• Namo Ayariyanam: I bow to the Acharyas (spiritual leaders who guide the sangha).
• Namo Uvajjayanam: I bow to the Upadhyayas (teachers who expound the Jain scriptures).
• Namo Loe Savva-sahunam: I bow to all the Sadhus and Sadhvis (all monks and nuns who practice Jainism).

Purpose before Samayik:

• This mantra purifies the mind and aligns the practitioner with the right mental attitude for meditation, reflection, and equanimity during Samayik.
• It acknowledges the key spiritual guides and helps cultivate humility, non-violence, and right view as preparations for the vow of Samayik.

Notes on tradition:

• This Namokar Mantra is widely used across both Digambar and Śvetāmbara communities as a common opening prayer before Samayik.
• If you follow a specific community rite, there may be small added lines or variations, but the five-line structure above remains central and widely accepted.

If you’d like, I can provide:

• A transliteration with diacriticals for easier pronunciation.
• A version with a short, traditional oblation (bhavya-vandanā) that some groups add before or after the Namokar Mantra.