According to: https://history.stackexchange.com/questions/46106/what-was-clothing-in-ancient-palmyra-like   An important trading centre which derived much of its wealth from the Silk Road, Palmyra was a multi-cultural city, influenced by both east (especially Iran) and west (Greece and Rome). This is reflected in the clothing they wore, but there was also a distinctly local style; in short, it’s a complex picture and generalizing is difficult. As Marybeth Osowski, in Fashioning Identity: Clothing and the Image of the Syrian in the Roman Empire, states:   The standard visual image of the Near East in Greek and Roman depictions features elements such as long-sleeved tunics and ankle-length trousers, bright colors and elaborate patterns or decorations, and other items like pointed hats or turbans also feature but are not universal.   The best visual evidence we have of clothing in 3rd century AD Palmyra comes from funerary monuments. However, these cannot be considered entirely representative of the population as a whole but rather of the local elite and wealthier residents, most likely wearing their finest clothing. Further, we can’t be sure to what extent these may have been idealized representations of what people actually wore. Lastly, there is the issue of status, and of how people wished to be seen in different social and cultural situations.   Generally speaking, there two styles of Palmyrene attire: one is termed Greek or Greco-Roman, the Parthian or sometimes Persian. Let's go: Sassanid clothes.  

https://archeologie.culture.gouv.fr/palmyre/en/clothes-and-jewellery Clothing.   The reliefs offer an insight into what people might have worn in Palmyra. Although there are examples of citizens wearing the Roman toga or himation, a draped garment worn by the ancient Greeks, most Palmyreans wore typically Syrian clothes, colourful and richly embroidered, influenced by the attire of their powerful neighbour to the east, the Parthian empire.     Below are images dedicated to Zenobia, both modern and reliefs.       

The style of these soldiers seems to have a very distant Asian influence, but it could be due to the influence of the Silk Road, according to some forums and Reddit posts. Chinese and Vietnamese style armor are mentioned.   The problem with this hypothesis is the Parthia/Persia blockade.

I have some descriptions in English and Spanish. The Numidian cavalry, composed of swift horsemen armed with javelins and small fur shields, was one of the most valuable weapons of the Carthaginians along with the troops of Iberian and Gallic mercenaries. The mobility of the Numidian horsemen and their ability to wear down the legionary columns before the clash between infantry impressed the Romans themselves before Sicily fell to the Republic. https://www.ospreypublishing.com/us/osprey-blog/2021/the-numidians-300-bc-ad-300/

The style of these soldiers seems to have a very distant Asian influence, but it could be due to the influence of the Silk Road, according to some forums and Reddit posts. Chinese and Vietnamese style armor are mentioned.