Conflicts can be different, as well as your role in a situation. Generally, you would need standard conflict resolution skills, like listening and comprehending, ability to express yourself and your feelings, ability to analyse situation in a respectful and understanding way. Empathy would also be in handy. Body language means a lot. Experience in managing stress and anger. Loads of factors affect your ability to resolve conflict situations.
If you are writing some kind of research on the topic, look here to find ideas and inspiration.