Certainly! In Jainism, "Mangal Devo" refers to the recitation or prayer invoking auspiciousness from the revered beings, often as part of the daily rituals. One of the most common "Mangalacharan" or auspicious prayers is the "Tirthankara Mangal", which is recited to remember the Tirthankaras, Arihantas, Siddhas, Acharyas, Upadhyayas, and all Sadhus. Here are the commonly recited "Mangal Devo" lyrics in English letters (Romanized):

Mangal Devo Lyrics (Romanized):

Arihantaanam Mangal Karanam, Siddhaanam Mangal Karanam, Aachaaryaanaam Mangal Karanam, Upaadhyaayaanaam Mangal Karanam, Sarva Saadhuunaam Mangal Karanam.

Esam Pancha Namokkaram, Sarva Paavappanashanam, Mangalanam Cha Savvesim, Padhamam Havai Mangalam.

Meaning:

• Auspiciousness (Mangal) be with Arihantas, Siddhas, Acharyas, Upadhyayas, and all Sadhus.
• This five-fold salutation (Namokar Mantra) destroys all sins and is the most auspicious of all auspicious things.

If you are looking for a specific Jain "Mangal Devo" prayer, please clarify the tradition or sect, and I can provide the lyrics accordingly.