We’re on the sixteenth and final sentence of the 14th Conlang Relay Text:
ñi þō jēhe cī;
and we get a few short words and the noun jēhe which means “truth”. The short words consist of the relational ñi and the exhortative marker cī and the modifier þō. Put this all together and we have:
“Let this be truth.”
which is a speech act finalizing the ceremony.