не надо бояться

don't be afraid

→ не
phrase Rare #39,725
don't be afraid Used to reassure someone that there is no need to feel afraid. The form бояться is used after надо; with a person in the dative, such as тебе, it means “you don't need to be afraid.”
RU: Не надо бояться задавать вопросы.
EN: Don't be afraid to ask questions.

Тебе не надо бояться.

You don't need to be afraid.

Не надо бояться, я же с тобой.

Don't be afraid, I'm with you.

— Могила светлячков (1988)

Но меня не надо бояться.

But you don't need to be afraid of me.

— Центральный вокзал (1998)

Тебе не надо бояться делать ошибки, когда учишь язык.

You shouldn't be afraid of making mistakes when learning a language.

Не надо бояться.

There is no need to be afraid.

— Могила светлячков (1988)