Nothing very difficult, the usual things like "Tell me about the time when you done something good, how you did it and what was the outcome of it" or "Tell me about your strengths/weaknesses” or “Tell me about the most difficult decision you had to make at work: give the background, how you acted and how it ended up” or “Tell me about the time when you had to stand against the majority” or “Tell me about the time when you had to deal with conflicting priorities”
More a less they look for examples from your work life.
Make sure the answer is structured in the following way: background of the situation- what was the issue and what was the reason for the issue, what you did and with was the outcome.