In Jain Dharma, the main and highest refuge is always the Ratnatraya and the Panch Parmeshthi: Arihant, Siddha, Acharya, Upadhyaya, and Sadhu.

About kuldevta / shasan rakshak devi-devta

• They are generally understood as worldly protector deities or guardian deities.
• They are not the ultimate object of liberation in Jainism.
• So, a Jain should not treat them as supreme, nor seek from them the final goal of moksha.

Can a Jain pray to them?

• respectful invocation,
• asking for protection of the shasan,
• asking for removal of obstacles in dharmic activities,
• or worldly protection in a secondary sense.

But this should always be done with the understanding that:

• they are not the true refuge,
• they are servants or protectors, not the liberated goal,
• and the devotee’s faith must remain centered on Jinendra and the Paramesthi.

For a samyagdrishti jiva

• recognizes the right path,
• keeps faith in Tirthankar’s teachings,
• and does not replace the Supreme with lower beings.

So:

• A Jain layperson may respectfully pray to kuldevta or shasan rakshak devta for protection, especially in traditional contexts.
• A sadhu generally does not seek worldly favors, and his devotion remains focused on Atma-dharma, vairagya, and the Paramesthi. If any protective stuti or invocation is done, it is only as a secondary, non-central practice and never as dependence for liberation.

In simple words

• For moksha: pray only to Arihant, Siddha, and the Ratnatraya.
• For protection of the shasan or worldly obstacles: some respectful prayer to devta may be done.
• Do not give them supreme status.

So the correct Jain दृष्टि is: respect them, but take refuge only in the Tirthankar’s path.

If you want, I can also explain this from the Shwetambar and Digambar perspective separately.