Norito (祝詞) are ancient Japanese Liturgy.
The first written documentation of Norito dates to 712 CE in the Kojiki and 720 CE in the Nihongi. Later documentation appeared in 927 CE as part of the Engi-shiki, a compilation of laws and minute regulation presented by the court.
Reading
Reading Norito requires furigana because of the unusual readings of the kanji.
References
Norito Wikipedia(Text) CC BY-SA