Fixing a motion sensor light

Hi

Just trying to fix the light, in the wiring I can see 3 live (brown,blue,grey) and a naked wire

In the light, I can see a brown, blue and green/yellow.

Not sure which should be connected to what? There is green/yellow in the wiring

Any help appreciated, thanks in advance

 

Thanks for the reply.

As you can see the wire from the wall, brown, black and grey(not blue as I mentioned in my first post)

I connected brown to brown in the light and left the other two wires from wall as it is