Eminem and Rihanna have participated in the ALS Ice Bucket Challenge, a trend that is meant to increase awareness regarding ALS (amyotrophic lateral sclerosis), otherwise known as Lou Gherig’s Disease

The two stars had ice dumped on their heads on stage. 

Rihanna dumped the ice on Eminem’s head as the emcee sat in a chair. Rihanna had ice dumped on her head shortly after.

Eminem called out Rick Rubin to participate in the challenge, also, according to Billboard.  

The rapper and singer have been touring together as part of their The Monster Tour, a run that ended last week.

Dr. Dre, Lil Wayne and Drake are among other high profile emcees who’ve participated in the ice bucket challenge. Dre called Eminem out. 

For more on the ALS Ice Bucket challenge, read this editorial

Additional footage of Eminem’s ice bucket challenge is here

RELATED: So Icey: Dr. Dre & 9 Other Artists Taking The ALS Ice Bucket Challenge