cloak of modesty

Translations
плащ скромности
He wears a cloak of modesty to hide his true intentions.
Он носит плащ скромности, чтобы скрыть свои истинные намерения.
Definitions
A metaphorical expression referring to a demeanor or behavior that conceals one's true feelings, intentions, or abilities, often to appear humble or unassuming.
Words
cloak

noun
покров
of

preposition
из
modesty

noun
скромность