Modpack for Crimson Cross Coalition FTB Pyramid Reborn server. The Prism pack should be directly importable into Prism Launcher (https://prismlauncher.org/) and the mods.zip pack is just the raw mods to dump into your mods folder if you're using the standard launcher or wish to create it yourself from another launcher. You will need to use Java 8 for this version of Minecraft https://www.java.com/en/download/manual.jsp
NOTE: Right click then "Copy link address" on the Prism Pack to paste directly into the prism pack import tool.