Protect others.
Meaning: This means to ask someone to think about the safety of other people. It's like saying, Please think about the safety of other people and do what you can to protect them.
Choice of Words: Protect is a verb that means to keep something or someone safe from harm or injury. Others is a pronoun that refers to people or things that are not the speaker or writer. When you put them together, "Protect others" is a command asking someone to keep other people safe from harm or injury.
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Related Expressions