In Jainism, prayers and reverence are typically directed toward the Tirthankaras, Siddhas, and the protective Yakshas/Yakshinis associated with Tirthankaras. Hanuman is not a standard or canonical figure in Jain worship.

• There is no official Jain practice or prayer to Hanuman in Digambar or Shwetambar traditions.
• If someone mixes Hindu devotional practice with Jain rituals, that would be a personal syncretism rather than a mainstream Jain practice.
• For authentic Jain devotion, common prayers include the Navkar Mantra (Namokar Mantra) and other prayers honoring Tirthankaras and virtuous beings.

If you’d like, I can share the Jain texts and meanings for Navkar Mantra or other traditional Jain prayers.