No follow in newsflash module (redirecting linkjuice)

[Bald-Bloke]

I'm hoping somebody could help please.
If this is incorrect feel free to correct me.
Say for example I have a joomla website about cars.
I also have a blog about cars within the same joomla site.

In the site is a static page about red cars. There is a newsflash module in this page showing related blog articles about red cars.

In the blog articles there are links pointing to certain pages within the body text. For example, 'red paint' hyperlink points to the red car page, sending link juice to that page.

The Newsflash module which is displayed on the static page shows relating articles including the article mentioned with the link about red paint, this is sending the link juice back. (I hope I am correct in thinking this)

I would like to strip out the follow from the articles on a newsflash module so the link indexing only goes one way from blog to article.

Is this possible? what is the correct way to do this please.
Is my theory correct and will this help/hinder any SEO efforts?