http://en.wikipedia.org/wiki/Adityahridayam
De
http://www.harekrsna.de/aditya-hridayam.htm
Tube
https://www.youtube.com/results?search_query=Adityahridayam
Slokas
http://www.dattapeetham.com/india/ashrama_prayers/aditya_english.pdf
With Translation
http://sanskrit.safire.com/pdf/ADITYA_TRANS.PDF
Agasthya was living in the midst of the sages in the forest of Dandakaranya. He was running a Gurukula (a residential institution to which students who sought education joined) and was the teacher of a large number of students.Shri Rama, the Prince of Ayodhya, had to spend fourteen years in the forest. (The story of Shri Rama is narrated in the great epic, the Ramayana.)He came to Dandakaranya with his wife Seetha and his brother Lakshmana. The sages welcomed them with greataffection. Shri Rama, Seetha and Lakshmana came to the hermitage of Agasthya. Because of his spiritual powers, Agasthya had known for a long time that Shri Rama would visit him. Agasthya looked after the guests well. He gave Rama a mighty bow known as the Vaishnava Dhanus and a quiver known as Akshaya Thuneera. This was a quiver known as Akshaya Thuneera.
This was a quiver, which would always be full of arrows. He also bestowed on him a number of weapons of rare power. According to his advice Rama and Lakshmana built a ‘Parnakuti’ (a hut) on the banks of the river Godavari and went to live there.Later, in the war between Rama and Ravana, Agasthya was among the many sages who assembled to watch the mightly battle. Ravana, too, was a great warrior. Shri Ramachndra was worried. He did not know how to kill Ravana. Then Agasthya came forward and taught him the most sacred mantra known as the ‘Adithya Hridaya’. It was addressed to the Sun God. By chanting it three times Rama got the strength to kill Ravana.
