The Italian would need aid in translating it (being Greek) (5)
I believe the answer is:
'translating it being greek' is the definition.
I can't judge whether this defines the answer.
'the italian would need aid in' is the wordplay.
'the italian' becomes 'I' (abbreviation for Italian).
'would' becomes 'd' (I've seen this in other clues).
'need aid' becomes 'lia' (I am not sure about this - if you are sure you should believe this answer much more).
'in' means one lot of letters goes inside another.
'id' going around 'lia' is 'ILIAD'.
Can you help me to learn more?
(Other definitions for iliad that I've seen before include "Work on war" , "Epic piece of writing" , "Old story" , "Work by Homer" , "literary work" .)