To give or be protection against something unpleasant means to prevent people or things from being harmed or damaged by it.

If an insurance policy gives you protection against an event such as death, injury, fire, or theft, the insurance company will give you or your family money if that event happens.

Protections are laws and other official measures intended to protect people's rights and freedoms.

If a government has a policy of protection, it helps its own industries by putting a tax on imported goods or by restricting imports in some other way.

If criminals offer people protection, they demand money from them and in return promise not to hurt them or damage their property.