защищать от

см. тж. предохранять от

In this way, the steel is protected against corrosion.

These pipes are protected from extreme heat and damage.

Oil seals safeguard the bearings against dust and grit.

Interferon protects cells against virus infection.

The dust shields the incipient stars from ultraviolet radiation.

Источник: Русско-английский научно-технический словарь на Gufo.me