The shaswat (eternal) stotra in Jainism is the Namokar Mantra (Navkar Mantra). It is considered the fundamental and eternal prayer of all Jains.

Original text (as commonly recited): णमो अरिहंताणं Namo Arihantanam णमो सिद्धाणं Namo Siddhānam णमो आयरियाणं Namo Ayariyānam णमो उवज्झायाणं Namo Ujjhāyānam णमो लोए सव्वंसाहूणं Namo Loe Savva-Sāhūṇam

Meaning (arth): I bow to the Arihants (enlightened beings), to the Siddhas (liberated souls), to the Acharyas (spiritual teachers), to the Upadhyayas (preceptors/learned teachers), and to all Sadhus (monks) in the world. This mantra purifies the soul and supports every other devotion; it is worn as the universal foundation of Jain practice.

Notes:

• This mantra is widely accepted by both Śvetāmbara and Digambara traditions; the core meaning and practice remain the same, though small textual or pronunciation variations may occur between the traditions.
• It is often recited at the start of rituals, daily puja, and during many Jain observances, making it the quintessential eternal stotra.

You can read more about Navkar Mantra and its role in Jain practice here and about the broader Nav Smaran group where Navkar is a central element