- Rally Comrades can include yourself (perhaps you're a Ranger using Royalty Revealed!)
"On a successful roll,
all members of the Company fighting in a Forward stance gain (1d) on their attack rolls in the following round. If the roll produces a single Success icon , then also
all those fighting in Open stance gain the same bonus." (my emphasis)
Protect companion: seconding the suggestions above to use the
Battle skill for Complications/Advantages. This can generate a bonus/penalty that lasts for a round, or even the whole combat if you get a 6! A PC can also use the defensive stance to replicate some of the effect of Protect Companion, this seems a good route using the existing ruleset for a solo PC. Plus not just Battle generates advantages/complication, remember the section on "Other Actions" and use other skills in combat creatively too!