This is the only D'ni writing on the 1996 Myst calendar. It is the journal entry for the month of November. The caption says, "Atrus's Prayer - Written in D'ni language"
Many of the words in the prayer are unfamiliar to D'ni linguists, and it's said that it was transcribed from the original before Cyan historians knew much of the D'ni language, so discrepancies in the text are to be expected. A partial translation by Josef Riedl can be found at the Guild of Linguists Homepage.