3 sentences

1. 唯有当今圣上能决断此事。

   wéi​yǒu dāng​jīn shèng​shàng néng jué​duàn cǐ shì.

   Only the current Emperor can decide this matter.

   Source: Dong Chinese Dictionary

2. 这件事情该如何处理，由你全权决断。

   zhè jiàn shì​qing gāi rú​hé chǔ​lǐ, yóu nǐ quán​quán jué​duàn.

   How to handle this matter is entirely up to your discretion.

   Source: Dong Chinese Dictionary

3. 他在关键时刻表现出了非凡的决断。

   tā zài guān​jiàn shí​kè biǎo​xiàn chū le fēi​fán de jué​duàn.

   He showed extraordinary decisiveness at the critical moment.

   Source: Dong Chinese Dictionary