connecting a 2-wire (red, blue) ceiling light to a 3-wire (red, black, green) ceiling power source
See Australia: Which wire is hot / active and which is neutral? for some more details, but basically:


Hot: Red -> Red
Neutral: Blue -> Black
Ground: Green


Typically, if you have a fixture that does not have a separate ground wire then there will be a screw attachment point on the fixture to connect the ground wire.