Hey my otherhalves brother collects necrons and im not sure about the blindness skill as he used it after he attacked, and im not to sure on that, is this move allowed???? Please help

love shmexyniteterror

Not quite sure what you mean ...

Do you know the name of the rule?

If it was veil of darkness (a lord + unit is picked up and then deep strikes), that happens at the start of the necron movement phase.

It sort of sounds like he veiled his unit out of a close combat in the assault phase???

The Necrons have a number of irritating special rules involving sight such as "Gaze of Flame", "Solar Pulse", "Terrifying Visage", "Gaze of Death" and "Decieve" each with different rules and used in different phases of the game.

As Ruffian said, if you can find the name of the rule used, and tell us how it was used in the game, we can let you know if the rule was used correctly.

all i know about it is that it blinds all the other players on the board so that turn they all cant shoot or anything
and my other half thinks its called solar pulse ?

Solar Pulse is used by a Necron Lord and is a one-use only item.

When used, any units firing at the Lord (and any unit he has joined) must use the night fight rules - they are not prevented from shooting at him at all, they just have to roll to see if they can see him.

What Matt said p15 codex necron..and just for completeness nightfighting is what you use first turn of dawn of war missions..p95 last paragraph..
Long winded.
(p95 bottom right)Units must take a spotting check after saying what they are shooting at (distance locked) 3d6x2 (average result will be something around 10"s)..Here only once per game and only if shooting at the lord.
I don't think I've seen anyone use it really..although if he had a destroyer wing (loads of those t5 bike things, walking on the table edge turn 1 in dawn of war he could choose to (for that turn) ignore nightfighting. So whilst all your army (as per the mission) would be limited to 10- 18" range (not able to hit anything) he could use all his str6 36" range guns on you..quite juicy really IF that ever came up.
Summary-
So if you were playing dawn of war mission.. he used it turn one after shooting normally and niteterror was suddenly oppressed by the grimdark of being totally out of range with his stand and shoot army..then you lot did it right, anything else was wrong (both bad and wrong in fact badong )