Mrutyunjaya Mantra

Om tryambakam yajamahe sugandhim pusti vardhanam
Urvarukamiva bandhanan mrtyor mukshiya mamritat

Translation:

Om. We worship and adore you, O three-eyed one, O Shiva. You are sweet gladness, the fragrance of life, who nourishes us, restores our health, and causes us to thrive. As, in due time, the stem of the cucumber weakens, and the gourd is freed from the vine, so free us from attachment and death, and do not withhold immortality.

http://en.wikipedia.org/wiki/Mahamrityunjaya_Mantra