Access Modifier Error: Cannot specify accessibility modifiers for both accessors of the property or indexer

Can anyone please explain what exactly wrong in following code. and what is correct way to write it?

Error: Cannot specify accessibility modifiers for both accessors of the property or indexer 

  public FileUpload ucFileUpload
    {
        protected get
        {
            return this.FileUpload1;
        }

        private set
        {
            this.FileUpload1 = value;
        }
    }
    public HiddenField ucHiddenContainer
    {
        protected get
        {
            return this.hfContainerNo;
        }

        private set
        {
            this.hfContainerNo = value;
        }
    }