This is the 9622nd most frequent Russian word.
христе
"Христе" is the vocative form of "Христос," meaning "Christ" in a religious context.
Here, 'Христе' is used in the locative case following the preposition 'во', signifying belief in Christ.
Верую во Христе, который принес нам спасение.
I believe in Christ, who brought us salvation.
In this case, 'Христе' is in the prepositional case, used after the preposition 'о' to indicate the subject of discussion.
О Христе рассказывают много историй.
Many stories are told about Christ.
Here, 'Христе' is part of a fixed phrase in the locative case, expressing invocation in the name of Christ.