Most simple and effective way is to create a shield this can be done using your aura itself or imagining it surrounding yourself. I prefer the Aura version as it helps you strengthen it over time.
it’s quite simple just sit down the way you would when you try to meditate, and take a few calming breaths, focus on your breathing now once your in sync slowly concentrate on your skin. It should feel like energy moving around very close to the skin.
Now with every breath in and out imagine that energy is getting larger and moving outwards by a couple of cm/inches at a time. Slowly your aura will extend into eliptical shape around yourself. Once you reach this stage start pushing the aura into spherical shape. Again use your breathing to help steady the creation.
Once you achieve your sphere congrats part 1 is complete your aura has been shaped into sphereical shield.
Part 2 is simply changing the density of your shield. So right now your sphere is just energy and is soft not that good for protection. So what we do its change it from soft to hard.
Now like we did before we use our breathing to help with the transforamtion. Take deep breath in and out, now with every in & out we imagine our clear energy sphere getting more solid. If you have difficulty with this just imagine it turning into a crystaline form. Keep doing this until the shield becomes solid, like a clear quartz.
Once you have reached this stage congrats your shield is now up and running.
Now Once the danger has passed you simply reverse the stages i described above. Slowly convert your solid shield back into energy using the breathing technique we used.
Once its energy then we go from sphere to eliptical shape, then back towards the body till it’s the same swirling energy sensation we started with. Then slowly let fade back onto the skin.
Then slowly come out of your mediative state and do some slow physical movement and streches to welcome yourself back.
Hope this helps guys 