EKS NodeGroup IAM Role on Config File (yaml)

Hello,

I'm new to EKS and I have setup a cluster with a NodeGroup from the AWS Console. Now, I want to do this setup by code, by eksctl using the yaml file. Currently I can create the cluster properly through it, but I can't find how to create the NodeGroup. My doubt is about where and how I specify the "Node IAM Role" field that appears in the AWS Console, but in the yaml file.

Thanks!