A nice moment, expressed both through the narration and the expression shown (momentarily) on his face.
People who believe in one god are still atheists in relation to myriad other gods; even people who are devotees of one form of Buddhism are skeptics in relation to myriad other forms of Buddhism.
If you don't recognize the words they're Chanting (being the English-accented Japanese mispronunciation of the Chinese transcription of the Sanskrit), cf. this Wikipedia article for more (link).
