3 sentences

1. 这个问题事关个人隐私。

   zhè gè wèn​tí shì​guān gè​rén yǐn​sī.

   This issue concerns personal privacy.

   Source: Dong Chinese Dictionary

2. 这事关我们的婚姻。

   zhè shì​guān wǒ​men de hūn​yīn.

   This is about our marriage.

   Source: OpenSubtitles

3. 这次手术事关生死。

   zhè cì shǒu​shù shì​guān shēng​sǐ.

   This surgery is a matter of life and death.

   Source: Dong Chinese Dictionary