Aditya Hrudayam is a very sacred stotram revealed by the Sage Agastya to Rama in the battle field. Whatever approach Rama took to kill Ravana it was impossible for him to kill Ravana as he was a MahaBrahmana and then the Sage Agastya revealed the esoteric secret lore of the Vedic Aryans and taught Rama about this stotram through which he was able to kill Ravana.
Raama Raama mahaabaaho shrnu guhyam sanaatanam yena sarvaanariinvatsa samare vijayishhyasi. 3
Oh Rama, mighty-armed Rama, listen to this eternal secret, which will help you destroy all your enemies in battle.
Aaditya hrudayam punyam sarva shatru vinaashanam Jayaavaham japennityam akshayyam paramam shivam. 4
This holy hymn dedicated to the Sun deity will result in destroying all enemies and bring you victory and never ending supreme bliss.
Sarvamangalamaangalyam sarvapaapapranaashanam. Chintaashokaprashamanam aayurvardhanamuttamam. 5
This hymn is supreme and is a guarantee of complete prosperity and is the destroyer of sin, anxiety, anguish and is the bestower of longevity.