Om Dasharathaye Vidmahe Sitavallabhaya Dhimahi,
Tanno Rama Prachodayat॥
The mantra is a prayer dedicated to Lord Rama. Here's the meaning
Om Dasharathaye Vidmahe - Om, let us meditate on Dasharatha (Father of Rama) Sitavallabhaya Dhimahi" - who is dear to Sita (Rama's wife), may we contemplate upon Tanno Rama Prachodayat" - May Rama inspire and enlighten us This mantra is a form of invocation seeking the blessings and guidance of Lord Rama, the epitome of righteousness and dharma in Hindu mythology. It is often recited by devotees to invoke the virtues of Lord Rama and to seek His grace and wisdom.