In theory, registering your systematic review with a repository such as Prospero (free) plants a flag in the topic that lets others know you are already researching it. You will have to write a 1-2 page protocol following PRISMA guidelines which can be viewed here. There are multiple places to register your protocol Such as Cochrane or Joanna Briggs Institute, but I recommend Prospero for systematic reviews and Open Science Framework (OSF) for scoping reviews.
Should you decide to register your review, per PRISMA protocols you will need at least one official search strategy from one database for a systematic review and an official search strategy for all databases utilized in the case of a systematic review. Your librarian can help with this.