(someone's) name is written in stone

Translations
имя (кого-то) вырезано на камне
He was so confident in his legacy, he believed his name was written in stone.
Он был настолько уверен в своем наследии, что верил, что его имя вырезано на камне.
Definitions
This phrase means that something, such as a decision or a person's involvement, is permanent, unchangeable, or officially confirmed. If someone's name is written in stone, it implies that their role, position, or inclusion is fixed and cannot be altered.
Words
someone

pronoun
кто-то
s

article or possessive pronoun
чей-то
name

noun
имя
is

functional word
есть
written

verb
написано
in

preposition
в
stone

noun
камне