Final answer:
The still is most likely showcasing a tense encounter between Brutus and Caesar.
Step-by-step explanation:
The still mentioned in the question does not specify the scene being depicted, so we cannot say for certain what is happening in the image. However, based on the given information about the sculptures of Augustus and Pompey, and the context of the Late Republic and Pax Romana, it is unlikely that the still represents a peaceful meeting between Brutus and Caesar. It is more likely that the still showcases a tense encounter between Brutus and Caesar, given the historical context of political rivalries and civil wars during that time period.