This incident is not mentioned in Acts or anywhere else. Galatians 2:11-13 indicates that not only Peter but also Barnabas, and possibly James, had been so intimidated by the Judaizers who had come down from Jerusalem to

Source:

KJV Defenders Study Bible, by Dr. Henry Morris, Ph.D.
Publisher: Thomas Nelson
Language: English
DEF 10 ISBN 0-529-10444-x
DEF 10-1 ISBN 0-529-10445-8