2 juniper srx550 firewall connect 1 CISCO core switch C9300-24T

[Nik2]

Hi Friends

I need your help to configure C9300-24T as core switch.
we have many VLAN, some VLAN connect has to go Firewall 1 and some VLAN connect Firewall 2. 
both Firewall stand-alone devices with different ISP.

Is There any loop in or how to i configure core switch like VLAN 1 & 2 use FW1 internet and tunnel with client.
VLAN 3 & 4 use FW2 internet and tunnel with client.?
so please Help me in this?

[pieterh]

you can use the commands

config t
interface <to FW1>
"switchport trunk allowed vlan 1-2"
interface <to FW2>
"switchport trunk allowed vlan 3-4"
end
write