This code will use ACF's galley field with Divi's native gallery module. Place this code snippet in your single template file located in your child theme directory.

single-template_name.php

<?php 
$columnNumber++
?>

<div class="et_pb_row et_pb_row_<?php echo $columnNumber++ ?> et_pb_gutters2 wcf_gallery_row">
    <div class="et_pb_column et_pb_column_4_4 et_pb_column_<?php echo $columnNumber++ ?>">
        <div class="et_pb_module et_pb_gallery et_pb_gallery_<?php echo $columnNumber++ ?> et_pb_gallery_grid et_pb_bg_layout_light clearfix">
            <div class="et_pb_gallery_items et_post_gallery clearfix" data-per_page="20">
                <?php 
                    $images = get_field('acf_gallery_field');
                    foreach($images as $image):
                ?>
                <div class="et_pb_gallery_item et_pb_grid_item et_pb_bg_layout_light" style="display: block;">
                    <div class="et_pb_gallery_image landscape" style="display: table-cell">
                        <a href="<?php echo $image['url'];?>" title="gallery">
                            <img src="<?php echo $image['url'];?>" alt="gallery">
                            <span class="et_overlay et_pb_inline_icon" data-icon="U"></span>
                        </a>
                    </div>
                </div>
                            
                <?php
                    endforeach;
                ?>

            </div> 
        </div> 
    </div> 
</div>

Hello Ilan,

I'm beginner with wordpress and divi.

I copied your snippet into my child theme in single-project.php just before get_sidebar to make my template project with divi theme builder. How can i add my acf gallery to the template ? With module texte and dynamic content ? With shortcode ? Because with module gallery it's impossible to add the acf field.. Sorry for my english, i just speak a litle bit. Thank you