Correct

两败俱伤

/ liǎng bài jù shāng /
Strokes

Definition

both sides suffer (idiom)/neither side wins

Example

Definition

both sides suffer/lose; neither side gains/wins

1
Háishi
还是
jiǎng
wéi
hǎo
  
,
miǎnde
免得
liǎngbàishāng
两败俱伤
  

It would be better for both sides to make peace than to wear each other out.