"Protect ourselves" is the Engpsh phrase to describe "保护我们自己". This phrase is commonly used to express the idea of taking measures to ensure our own safety or well-being.

Here are a few examples with Engpsh and Chinese translations:

We need to protect ourselves from the sun's harmful rays. (我们需要保护自己免受太阳有害的紫外线。)
We should protect ourselves against fraud and scams. (我们应该保护自己免受欺诈和骗局的侵害。)
It's important to protect ourselves from toxic people. (保护自己免受有毒人格的影响很重要。)