"They convinced the important men and women to persecute Paul and Barnabas"
# threw them out beyond the border of their city
"removed Paul and Barnabas from their city"
# shook off the dust from their feet against them
This was a symbolic act to indicate to the unbelieving people that God had rejected them and would punish them. (See: [[rc://en/ta/man/translate/writing-symlanguage]])
# the disciples
This probably refers to the new believers in the Antioch of Pisidia that Paul and Silas just left.