The Power of Destruction is said to be a very difficult power to defend against due to its erasure properties, as the most effective way to guard against it would be to counter the destruction blast with ranged attacks' said an article Jiraiya read on PoD. The Bael Clan or the Gremory Clan didn't make any efforts to limit the information as they saw their PoD as a matter of pride. Naruto had a good idea as to how to deal with it. As for Sona Sitri, her Water Manipulation as a member of the Sitri Clan is not new.
'Sona's demonic power specializes in water manipulation. A form of Magic that revolves around the use of water, under the users command to employ for various purposes. Depending on its use, the caster generates large volumes of water into various shapes and forms'. Water manipulation is not something new for Naruto as he can use Water Style himself and know how to deal with it.
With a plan made, he waited for the girls to attack and after some time of no moment, they attacked him head-on and started with Taijutsu.
Both Sona and Rias are by no means weak, but when you compare it to a war-hardened and alien fought Naruto with tons of battle experience, they were like children trying to fight professional fighters.
Naruto held back a lot as he is just a clone, but he is strong enough to go toe to toe with an Ultimate Class Devil and Sona and Rias are not Ultimate Class level in hand to hand combat when combined.
The Clone won the match with his fast reflexes and agility. Rias and Sona tried their best, but couldn't give him any competition and they soon learned this.
"You are physically strong," said Rias.
"I must admit. All your medals in martial arts are for nothing I guess" said Sona as she saw Naruto's achievements in Martial Arts from his documents and the Clone smirked at them.
"Thank you for your compliments, girls. But our spar is not over I suppose" said Naruto as he saw both Rias's and Sona's bodies lit with their respective magic circles and their magic form in their hands.
Rias's fists were engulfed in PoD while Sona's body was protected with water-like armour. Naruto smiled at that. Compared to Sona's mastery over her magic, Rias's has far to be desired.
But in terms of raw strength, Rias's PoD out matches Sona's water and their properties were completely different. He knew how to deal with them.
"Good. You are not as foolish as I thought" he said and his body was lit with an orange magic circle. Rias and Sona got a tingling sensation. They got this primal urge to run and never to return.
This perplexed Sona and Rias. They only feel like this when they are close to a church or a holy object. But they were near neither of them. They wanted to move, but something kept them in place. Before they could conclude, a voice spoke from the darkness.
"This is called Shadow Binding. A technique that binds any enemy with their Shadow. Everything you felt was a part of that" said Naruto with a smirk. Though he activated his Light Magic to give them a good experience of how it feels like to be near light magic user, he chose not to push it any further. And so he bluffed by saying everything is part of the attack.
Rias and Sona sighed in relief. They didn't feel that much pressure in a long time. It felt as if being crushed under a mountain or even worse.
"That was overboard, Naruto-kun," said Reni in a chiding tone. As a Human-Devil, Light doesn't affect her as much as any normal Devil and as she is a member of Naruto's peerage, she is completely resistant to light or holy magic. That's one of the new things they discovered recently.
Though even Reni doesn't know the full power of Naruto's sacred gear as he just told her it is part of his Sacred Gear powers. She didn't ask him. She had faith in him and that's enough to counter any unnecessary questions that rose in her mind.
"Hehehe. Sorry" apologised Naruto with a smile.
"That's fair I guess. We said not to hold back" said Sona in a stern tone, managing to compose herself in the gap. All their build-up magic was lost due to their lack of concentration.
"Yes, I think he followed the rules" agreed Rias. Reni gave in to them and the spar continued. Sona and Rias switched to Magical attacks instead of Hand to hand and other types and Sona attacked first.
"Hawks," said Sona and attacked Naruto with various hawks made of water. The hawks dove in on Naruto only to be dispelled by Naruto's attack.
"Water Style: Water Bullet," said Naruto and sent bullets made of pressurised water towards the diving hawks and dispelling them.
"Lions," said Sona and sent Lions made of water towards Naruto only to have the same fate.
"Serpents"
"Wolves," said Sona and sent multiple water Serpents and Wolves towards Naruto.