I sing this to my kids every night before they go to sleep. My parents used to sing it to me and my siblings before we went to sleep too!

Ik ga slapen ik ben moe
sluit mijn beide oogjes toe
Here, houdt ook deze nacht
over mij getrouw de wacht
Amen!

I've Googled it and there's at least 5 more verses, but this is the one that we sang.