Oh...thanks. I thought magisk.zip was something else !!The Magic Mask for Android. Contribute to topjohnwu/Magisk development by creating an account on GitHub.github.com
Download the Magisk apk file, rename it to Magisk-VXX.zip, and flash it using "adb sideload" command in recovery just like you flash the ROM. If Magisk isn't automatically installed, or you have issues, re-name the file back to .apk, and install in on your phone.