Wrong U_U, even though these two elements are neutral to each other, lightning and fire aren't elements that have a construct nature, so both would simply pass through each other, unless either technique states it has a solid construct for some reason.
Next...
( Raiton: Purazuma Bōru ) - Lightning Release: Plasma Ball
Rank: B
Type: Offensive, Defence
Range: Short
Chakra cost: 20 (+5 per turn active)
Damage points: 40 (-15 if target comes into contact with the barrier)
Description: The user manipulating their chakra generates a plasma barrier around them to serve as a defense which protects them from incoming attacks, even from something as wide-ranged as the Quicksand Waterfall Flow however the user cannot use other techniques besides lightning release or physical based techniques. The user can rush at their opponents even if the barrier is active. The shield can be used offensively, by discharging the electricity in the direction of their choice in a wave resulting in using the energy of the barrier and ending its effects.
Note: Technique remains active for 3 turns.
Gather your chakra and mold it into lightning based chakra, then proceed to release the chakra all around you and form it into a plasma barrier all around you, this barrier works as a good defense for a lot of techniques though the downside is you will only be able to use lightning techniques while the barrier is active, and you can also release the electrical enery of the barrier and use it as an attack which will initially end the effects of the barrier.