Durga puja is an important festival in Hinduism. As per Hindu scriptures, the festival marks the victory of goddess Durga in her battle against the demon (asura)Mahishasura. The nine days are celebrated as “Nava”(9) Ratri.
Another name for Durga is “Durgatinashini” which means ‘the one who eliminates suffering’. Her name thus indicates her role as the one who protects her devotees and removes evil from the world.