Recite this mantra every day to not have obstacles at the time of death, like heavy pain, incontinence, heavy karmic torment, and the sickness of terrifying karmic visions so you can't meditate.
This is the heart mantra of Eliminating Obscurations (Skt: Sarvanivaranaviskhambhin; Tib: Dribpa Namsel.)
OM SVETAVARA VIJALINE SVAHA
[Visit the FPMT Catalogue to find links to The Exalted Zung Called "Eliminating Obscurations" practice, and the audio file Recitations for Alleviating Pain.]