无论原因如何，冲突必然会导致消极的影响或伤害,而且是不能避免的

No matter what the reasons are,conflict will certainly lead to negative effects or injury,and it's inevitable.

whatever the reason is, the conflict must course negtive effects or injuries, and it's unavoidable.

这样可以吗？

No matter what the reason is,the conflict certainly lead to negative effect,and it is inevitable.

whatever the cause is, conflicts would certainly lead to negative efforts or damages, which is inevitable.