I could describe the symptoms, but attempting to describe the actual experience is nearly impossible. I'm not sure I could give you any explanation or report that would do it justice. Best I could tell you is read up on psychedelics/meditation and ego death. Or, if you ever take a heroic dose of LSD, psilocybin or DMT, you'll learn for yourself.
If you're frightened of dying, and you're holding on, you'll see devils tearing your life away. But if you've made your peace, then the devils are really angels, freeing you from the Earth.
