He doesn't care at all what people say behind his back.

别人背后议论，他毫不在意。

《新英汉大辞典》

I won't comment on what people say.

对人们说的话我不作评论。

youdao

It's what people say pressure is.

就是人们常说的压力。

youdao

However,my sister does not worry about what people say about her.

VOA: special.2010.06.13

In other words, we should not care what people say about us, but we should be prepared to develop qualities of self-containment, autonomy and independence from the influence that others can exercise over us.

换句话说，我们不应理会别人怎么说我们，而我们应准备好,发展自制的特质，自治与自主,排除他人,可能对我们的影响。

耶鲁公开课 - 政治哲学导论课程节选

So don't listen to what people say about United States' East Coasters. That's not true.

所以不要听人说美国东海岸的人怎样，那并不是事实。

纽约的人们 - SpeakingMax英语口语达人

But his main message was clear: Trust me when you worry about what people say.

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We interpret what people say to us only partially from the words they use.

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"What is important is to forget what people say and focus on our strengths, " he said.

CNN: STORY HIGHLIGHTS