Enable Secure Boot with Multiple OS for Battlefield 6

As its currently, sadly, not possible to run Battlefield 6 on (Arch) Linux I have installed Windows 10 on a second hard drive. But the next problem is, that Battlefield 6 requires SecureBoot...
Now the question is how I can achieve having secure boot enabled and still being able to boot into arch and into windows using GRUB.
Does anyone have any experience in this?