Each of these steps is generally part of conflict resolution, but the one that might be considered an exception or not a step in conflict resolution, in the traditional sense, is "Debate the differences."
While debate may involve discussing differences, it may not always align with the collaborative and constructive nature of conflict resolution.
Typically, conflict resolution involves understanding differences, finding common ground, and seeking mutually agreeable solutions rather than engaging in a confrontational debate.
The other steps—defining the problem, evaluating solutions, and compromising—are more integral to the conflict resolution process.
Full Question:
Although part of your question is missing, you might be referring to this full question:
Each of these is a step in conflict resolution, except:
Evaluate solutions suggested.
Define the problem.
Debate the differences.
Compromise