Specifically it is believed by many people that poems “laa vokkintayu ledu;” etc are empowered with mantra saksthi. As such any critically dangerous situation can be overcome by reciting “laa vokkintayu ledu”.
The story is an elephant king was caught in life threatening situation due to one crocodile. In response to his prayers, Lord Vishnu rushed there and saved him instantly.
Telugu Potana Bhagavatam