I guess the easiest way to solve this is to create a viewmodel that has one property for div1 and one property for div2.

In page controller, you could have some like this:

var contentLoader = ServiceLocator.Current.GetInstance<IContentLoader>();
if (currentPage.MyContentArea?.FilteredItems != null)
{
    var firstList = currentPage.MyContentArea
                                .FilteredItems
                                .Select(item => contentLoader.Get<IContent>(item.ContentLink))
                                .Take(12)
                                .ToList();

    var secondList = currentPage.MyContentArea
                                .FilteredItems
                                .Select(item => contentLoader.Get<IContent>(item.ContentLink))
                                .Skip(12)
                                .ToList();
}

And then it's easy to render divs using the foreach loop.

Thanks a lot Dejan!

My controller looks like this:

            var contentLoader = ServiceLocator.Current.GetInstance<IContentLoader>();

            if (currentBlock.MyContentArea?.FilteredItems != null)
            {
                viewModel.FirstList =
                    currentBlock.MyContentArea.FilteredItems.Select(item => contentLoader.Get<MySubBlock>(item.ContentLink))
                        .Take(12)
                        .ToList();

                viewModel.SecondList =
                    currentBlock.MyContentArea.FilteredItems.Select(item => contentLoader.Get<MySubBlock>(item.ContentLink))
                        .Skip(12)
                        .ToList();

And my viewmodel:

        public List<MySubBlock> FirstList { get; set; }
        public List<MySubBlock> SecondList { get; set; }

Rendering views:

            <div class="div1">
                @if (Model.FirstList != null && Model.FirstList.Any())
                {
                    Html.RenderPartial("/Views/MySubBlock/Index.cshtml", Model.FirstList.ToArray());
                }

            </div>

            <div class="div2" data-toggle-id="id">
                @if (Model.SecondList != null && Model.SecondList.Any())
                {
                    Html.RenderPartial("/Views/MySubBlock/Index.cshtml", Model.SecondList.ToArray());
                }
            </div>