1.OPEN A DOCUMENT

first,open a document of any color and any size.

 

2.PROCESS

Select ellipse tool(U), Press shift+click so that u you have a perfect round.

Capture2
right click on the layer and select convert to smart object.
Then, Go to filter>blur>radial blur and give the settings as below,

Capture3
So you will have lighting effect like shown below.

Capture4

 

3.FINAL STEP

Now draw a new round bigger than the previous one with the same color and give same effect.
Draw another big round and give same effect so you’ll have light effect like below.

Capture6