Two Melbourne women have handed themselves in to police over the assault of a Christian bishop bus driver who was allegedly bitten, punched and spat on.

Police say the Noble Park women, aged 22 and 40, are in custody after they turned up at Dandenong police station on Friday.

Driver Faavae Tuiloma said he was attacked when the women allegedly refused to pay their fares.

"She ripped my shirt off and I just defended myself by pushing her," Mr Tuiloma told reporters on Friday.

"I was pushing this lady down and then I felt my thumb go in her mouth and she bit it."

Mr Tuiloma is nervously awaiting blood tests to determine if he contracted anything after being bitten.

He says he's embarrassed about being attacked by women but has forgiven them for the attack.

"To me as a Christian, I'm serving in my church as a bishop for five years and I have to forgive them," he said.

Police are confident of identifying the pair from clear CCTV footage of the November 29 attack.

© AAP 2014