Hi,
You can just create an access-list with the IP's you downloaded and bind it to the outside interface.
For example.
access-list BLOCK_LIST extended deny ip 201.220.192.0 0.0.31.255 any
access-list BLOCK_LIST extended deny ip 200.55.178.96 0.0.0.31 any
access-list BLOCK_LIST extended deny ip 200.55.178.80 0.0.0.7 any
access-group BLOCK_LIST in interface Outside
HTH
Abheesh