I have uploaded the Durga Stuti from the Mahabharata in Kannada, Devanagari and English scripts on the mantras page.
Just before the Mahabharata war, Sri Krishna instructs Arjuna to pray to Lord Durga in order to ensure victory over the Kauravas, led by the mighty Bhishma. Arjuna does so and Lord Durga appears before him and grants him a boon that Pandavas will be victorious. This chanting of Arjuna is known as the Durga Stuti. This is another one of those hundreds of Stotras and Stutis which are part of the Mahabharata epic.
This Durga Stuti is to be chanted for overcoming disease, enemies and other obstacles.