1. The defense mechanisms you utilize in the hostility stage are not helpful.
    你在敌意阶段中使用的这些办法并不能解决问题。

2. This is the “hostility stage.”
    这是 “敌意阶段”。

3. Feelings of hostility will ruin our opportunity of success.
    敌对情绪会毁掉我们成功的机会。