To block FTP traffic from the Branch 2 network on router R1 while allowing all other traffic, the commands "access-list 101 deny tcp 10.0.2.0 0.0.0.255 host 10.0.101.3 eq ftp" and "access-list 101 deny tcp 10.0.2.0 0.0.0.255 host 10.0.101.3 eq ftp-data" are required. These commands specify an access control list that denies FTP (port 21) and FTP-data (port 20) traffic from the 10.0.2.0/24 network to the host 10.0.101.3, while the command "access-list 101 permit ip any any" allows all other traffic.