Short answer

• Pratima (Murti) in Jainism is a physical image or symbolic representation of a Tirthankara or a revered figure used as a focus for meditation and reverence.
• Yantra is not a canonical Jain practice for worship or meditation. Jain sadhana centers on shrines, Namaskars, stotras, and mantras, not on geometric diagrams as a Pratima.
• Uvasaggaharam Stotra is a devotional hymn (stotra) dedicated to Lord Parshvanath. It is chanted as a “mantra-like” prayer to remove obstacles, miseries and fear. It is not a yantra, but the sacred verses themselves are what you recite.

Detailed explanation

• Murti or Pratima: In Jain temples and homes, Jains use images or symbols of Tirthankaras as a aid to memory, reverence, and meditation. The purpose is to inspire right faith, conduct, and detachment, not to perform magical acts with a diagram. The significance is devotional and ethical, rooted in the Mahavira tradition of seeing the Tirthankaras as exemplars.
• Yantra: There is no standard Jain practice of using yantras (geometric diagrams) for worship or as a substitute for murti. If you see a diagram, it is not considered a Pratima in the Jain sense and is not central to Jain sadhana.
• Uvasaggaharam Stotra as a mantra: This stotra is a concise hymn praising Parshvanath and requesting the removal of obstacles and distress. It is commonly recited with faith and devotion, and many devotees repeat it a certain number of times (e.g., 8, 21, 108, or 1008), often in the morning or evening. The essence is surrender to Parshvanath, purification of the mind, and the removal of karmic obstacles. It is not a yantra, but a set of sacred verses (mantra-like in practice) to chant. The stotra is attributed to Bhadrabahu in tradition and is widely used in Śvetāmbara and Digambara communities with small textual variations. The core purpose remains the same: protection, relief from difficulties, and spiritual progress. ( jainknowledge.com)

Notes on tradition differences (Digambara vs. Śvetāmbara)

• Both traditions venerate Uvasaggaharam Stotra and recite it for removal of obstacles. Textual forms and minor verse counts can vary by lineage, but the central meaning and practice—chanting to seek Parshvanath’s protection—are shared. If you study a specific edition, you may notice small differences in the verses or arrangement, but the purpose stays the same. ( jainknowledge.com)

If you want to explore the text and practice further, you can read more here and here .

Note: I can explain any specific verse or provide the exact traditional text and its artha if you specify which tradition (Śvetāmbara or Digambara) you’re following.