What is the correct version of Google Play Service for Micromax Unite 2 Lollipop 5.0?

A cousin's Micromax Unite 2 was recently upgraded to Lollipop and rooted. To save application space I tried to integrate the updated Play Services into system partition using Link2SD. But this caused the disappearance of Play Services from list of installed applications. I tried installing a version from another phone (which is actually KitKat 4.4.4) and that resulted in Play Services force closing and various applications including Play Store not opening.

Installing and integrating an .apk from apkmirror for Lollipop did not result in success. It still is not opening or force closes.

I understand that after Lollipop there are multiple versions of Play Services depending on individual phones.

Please suggest me the correct version for Micromax Unite 2 on Lollipop firmware.

micromax Unite 2 a106 8 g.b rom

Hello to everyone...
my micromax Unite 2 a106 8 g.b rom is not booting...
1. i rooted my phone using kingroot
2. it was working fine until i installed chainfire3d app
3. now whenever i switch on my phone it just freezes at micromax logo screen
4. whenever i connect my phone to pc using usb it connects and then disconnects and the process repeats continously.
5. by which i am unable to install rom using sp flash tool...

plz help me with this problem...thanks in advance...